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TDS-C01 Tableau Desktop Specialist

Test Detail:
The Tableau TDS-C01 exam, also known as the Tableau Desktop Specialist exam, is a certification assessment that evaluates an individual's knowledge and skills in using Tableau Desktop for data visualization and analysis. This certification is designed for professionals who work with Tableau and want to demonstrate their proficiency in leveraging Tableau Desktop for data-driven decision making.

Course Outline:
The Tableau Desktop Specialist course provides participants with a comprehensive understanding of Tableau Desktop and its functionalities for data visualization and analysis. The following is a general outline of the key areas covered in the certification program:

1. Introduction to Tableau:
- Understanding the Tableau product suite and its key components.
- Exploring the Tableau Desktop interface and workspace.
- Connecting to data sources and understanding data types.

2. Data Preparation and Analysis:
- Importing and cleaning data in Tableau Desktop.
- Creating calculated fields and using functions.
- Applying filters, sorting, and grouping data.
- Performing data blending and joining.

3. Creating Visualizations:
- Creating basic visualizations, such as bar charts, line charts, and scatter plots.
- Using different chart types to represent data effectively.
- Applying formatting options to enhance visual appeal.
- Building interactive dashboards and stories.

4. Advanced Analytics:
- Applying advanced analytics techniques, such as forecasting and trend analysis.
- Using parameters to create interactive visualizations.
- Implementing level of detail (LOD) expressions for complex calculations.
- Creating advanced visualizations, such as maps and heat maps.

5. Sharing and Publishing:
- Saving and publishing workbooks and dashboards.
- Configuring data source refresh schedules.
- Collaborating and sharing Tableau content with others.
- Applying security and access controls.

Exam Objectives:
The Tableau TDS-C01 exam assesses candidates' knowledge and skills in using Tableau Desktop for data visualization and analysis. The exam objectives include, but are not limited to:

1. Demonstrating proficiency in connecting to data sources and preparing data for analysis.
2. Creating and customizing visualizations to effectively represent data insights.
3. Applying basic and advanced analytics techniques in Tableau.
4. Building interactive dashboards and stories for data storytelling.
5. Sharing and publishing Tableau content and applying security measures.

The Tableau Desktop Specialist certification program typically includes comprehensive training provided by Tableau or authorized training partners. The syllabus provides a breakdown of the topics covered throughout the course, including specific learning objectives and milestones. The syllabus may include the following components:

- Introduction to Tableau and Tableau Desktop
- Data preparation and analysis in Tableau
- Visualization creation and customization
- Advanced analytics techniques in Tableau
- Sharing and publishing Tableau content
- Exam preparation and practice tests
- Final Tableau Desktop Specialist Certification Exam
Tableau Desktop Specialist
Tableau Specialist study help

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Tableau Desktop Specialist
Question: 72
True or False: Trend lines can only be used with numeric or date fields
A. True
B. False
Answer: A
You can show trend lines in a visualization to highlight trends in your data.
To add trend lines to a view, both axes must contain a field that can be interpreted as a number. For example, you
cannot add a trend line to a view that has the Product Category dimension, which contains strings, on the Columns
shelf and the Profit measure on the Rows shelf.
However, you can add a trend line to a view of sales over time because both sales and time can be interpreted as
numeric values.
Question: 73
Is SUM a table calculation?
A. Yes
B. No
Answer: B
SUM is an aggregate function, not a table calculation!
A table calculation is a transformation you apply to the values in a visualization. Table calculations are a special type
of calculated field that computes on the local data in Tableau. They are calculated based on what is currently in the
visualization and do not consider any measures or dimensions that are filtered out of the visualization.
The most common Table calculations are:
Running Total
Percent Difference
Percent of Total
These can be calculated using: Table(across), Cell, or Specific dimensions!
Question: 74
Which one of the following is a dimension?
A. Longitude
B. Measure Names
C. Number of records
D. Latitude
Answer: B
Measure Names is a dimension. Latitude, Longitude, and Number of records are all measures.
Question: 75
True or False: Physical tables remain distinct (normalized), not merged in the data source whereas logical tables are
merged into a single, flat table.
A. True
B. False
Answer: B
In fact, the opposite of this is true.
Trick: Whenever you think of joins -> Think that after the join is created, we get 1 single flat combined (joined) table.
This flat combined table is created prior to us creating our visualizations. This happens at the physical layer.
If you ever think about relationships, know that all tables will remain distinct and separate, and relationships sit at the
logical layer. At run time, when you bring in the dimensions and measures to create your viz, Tableau very smartly
creates the necessary joins, relates the tables and sends queries to these tables to get the resultant data back in the most
meaningful way possible. This allows you to focus on using your data and revealing insights from it and focus less on
the data preparation aspect!
Refer to logical layer vs physical layer from the official
Question: 76
Which of the following are valid ways to show Mark Labels in the visualisation?
A. Click on the Show mark labels icon in the Toolbar
B. Drag the measure to the Text label in the Marks Card
C. Click on Data in the Menu bar and Choose Show Mark Labels
D. Click on Analysis in the Menu bar and choose Show Mark Labels
Answer: A,B,D
The following showcase how you can show mark labels. Using the Sample Superstore dataset:
1) Let’s create a Bar chart showing the sales for each sub-category:
2) Now you can show labels by:
Question: 77
Which of the following are interactive elements that can be added to a dashboard for users?
A. URL Action
B. Filter Action
C. Highlight Action
D. Edit Tooltip Action
Answer: A,B,C
We can perform filter, URL and highlight actions out of the above given choices on a dashboard.
Please refer to the image below:
Graphical user interface
Description automatically generated
Question: 78
Which of the following URL prefixes are permitted when creating a URL Action in Tableau?
Answer: B,C,D
A URL action is a hyperlink that points to a web page, file, or other web-based resource outside of Tableau. You can
use URL actions to create an email or link to additional information about your data. To customize links based on your
data, you can automatically enter field values as parameters in URLs.
Graphical user interface, text, application
Description automatically generated
Graphical user interface, application, Word
Description automatically generated
Graphical user interface, text, application
Description automatically generated
Graphical user interface, text, application
Description automatically generated
Question: 79
Which of the following are the options to export the data used to build the view / visualisations?
A. CSV file
B. PDF File
C. JSON format
D. MS Access Database
Answer: A,D
You can export the data in a Tableau data source, including all or part of the records from your original data.
Alternatively, you can export only the portion of data used to generate the view.
Since the question mentions the data used to build the view, we’ll focus on that:
*Export data in the view to Microsoft Access or .csv*
Export the data that is used to generate the view as an Access database (Windows only) or.csv file (Mac only).
1) In Tableau Desktop, select Worksheet > Export > Data.
2) Select a location and type a name for your Access database or .csv file.
3) Click Save.
4) If you’re on Windows, the Export Data to Access dialog box displays to give you the option to immediately use the
new Access database and continue working in Access without interrupting your work flow.
Graphical user interface, text, application, email
Description automatically generated
Question: 80
Suppose I have the following view.
What will be the total number of marks if I drag a new measure to the row shelf vs the column shelf?
A. If dragged to row shelf: 14 marks; If dragged to column shelf: 7 marks
B. If dragged to row shelf: 7 marks; If dragged to column shelf: 14 marks
C. If dragged to row shelf: 14 marks; If dragged to column shelf: 14 marks
D. If dragged to row shelf: 7 marks; If dragged to column shelf: 7 marks
Answer: A
This is a tricky question often asked in the exam.
If we drag a new measure to the row shelf, the following happens:
We now have 2 rows, and the same 7 columns for both these rows. Therefore, 2×7 = 14 marks!
Graphical user interface, chart, bar chart
Description automatically generated with medium confidence
But if we drag the same measure to the column shelf, we have just 1 row and a chart created for each of the columns.
So (1×7) = 7 marks!
Graphical user interface, text, application
Description automatically generated
Reference and notes:
Question: 81
Which of the following is not a Trend Line Model?
A. Linear Trend Line
B. Exponential Trend Line
C. binomial Trend Line
D. Logarithmic Trend Line
Answer: C
According to the official Tableau documentation, there are 5 types of trend lines which we can work with in Tableau:
1) Linear Trend Line
2) Logarithmic Trend Line
3) Exponential Trend Line
4) Polynomial Trend Line
5) Power Model
Hence, the correct answer is BINOMIAL trend line which is not present in Tableau.
See the following image:
For more information, refer to:
Question: 82
How can you change the default Tableau repository location?
A. By clicking on Window -> Repository Location
B. By clicking on Help -> Change Repository Location
C. By clicking on File -> Repository Location and choosing a new location
D. By Moving the repository location manually to wherever we want
Answer: C
According to the official Tableau documentation:
Graphical user interface, text, application
Description automatically generated
Question: 83
Which of the following options best describe measures?
A. They are categorical, qualitative
B. They are categorical, quantitative
C. They are numerical, qualitative
D. They are numerical, quantitative
Answer: D
Data fields are made from the columns in your data source. Each field is automatically assigned a data type (such as
integer, string, date), and a role: Discrete Dimension or Continuous Measure (more common), or Continuous
Dimension or Discrete Measure (less common).
Dimensions contain qualitative values (such as names, dates, or geographical data). You can use dimensions to
categorize, segment, and reveal the details in your data. Dimensions affect the level of detail in the view.
Measures contain numeric, quantitative values that you can measure. Measures can be aggregated. When you drag a
measure into the view, Tableau applies an aggregation to that measure (by default).
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Tableau Specialist study help - BingNews Search results Tableau Specialist study help - BingNews Specialist study support

Find out about the specialist support you might be able to access to help with a disability.

If you need to access specialist study support, we can advise you. Types of specialist study support can include:

How to access specialist study support

Disabled Students' Allowance funding 

If you are eligible to apply for a Disabled Students’ Allowance (DSA), this may be able to help fund your specialist study support.

To check if your DSA can pay for your specialist support, sign up to one of our DSA workshops.

Speak to our Disability team

If you cannot access funding from the DSA, or you require support which DSA does not cover (such as an exam support worker), speak to our Disability team to discuss your options.

Booking a room to meet your specialist study support worker

Use the find a room service to book a room to meet your support worker or diagnostic assessor. It displays a list of teaching spaces by building, and their current booking status over the next 3 hours. 

Other spaces and facilities across campus are available to help you study, including library study spaces, blended learning spaces, or open access computers.

Types of specialist study support:

Specialist mentors

Mentors provide confidential practical and emotional support in response to a broad range of wellbeing-related issues. Examples include (but are not limited to) stress, anxiety, depression and low motivation/morale. Mentors offer support by empowering you to develop strategies to manage your wellbeing and meet your academic goals. They can help you with:

  • Time management and workload prioritisation
  • Goal setting and concentration
  • Developing a work-life balance
  • Liaising with university departments
  • Identifying appropriate assistive technology

Mentors can only support you during agreed sessions, and they cannot provide counselling or therapy, but they may signpost you to organisations that can.

Study skills tutor

This is confidential support with your academic studies. Study skills tutors can support you to develop independent learning, including helping with understanding assignment briefs, developing effective research techniques, structuring academic writing, and preparing for exams. They can help you with:

  • Spelling, punctuation and grammar
  • Developing academic writing
  • Structuring and presenting ideas
  • Research strategies
  • Organisation, motivation and time management
  • Revision tips and memory skills
  • Identifying appropriate assistive technologies

A study skills tutor cannot offer subject-specific tuition, assign additional work, or proofread your work, and they can only support you during agreed sessions.

Exam Support Workers: Readers, Scribes, Prompters

Exam Support workers are guided by you. You may choose to use their support extensively, or only a little. They cannot make suggestions or proofread your work for you. Your work must still be your own.

Practical support assistant

This is manual, practical and mobility support to assist you with manoeuvring between and around key study venues. This may include carrying books or equipment, acting as a sighted guide or providing wheelchair assistance. You might use practical support in the library, in a laboratory or workshop, or on a field trip.

Library support assistant

This is assistance in searching library catalogues and electronic resources under your direction. Library Support Assistants can help you to locate, retrieve and carry academic library materials. This support also includes help with scanning and photocopying library resources, and help locating study areas.

Workshop/laboratory assistant

This support is to provide you with any support and practical assistance you may need to complete required assignments in your workshops and/or laboratory work.

Manual notetaking

Manual notetakers produce a manual, accurate and comprehensive set of notes from your lectures (and on occasion seminars and one-off university sessions). The notes can be provided in a handwritten format or typed and emailed to you in your style and format preference.

Electronic notetaking

This is speech-to-text specialist communication support provided by a qualified electronic note-taker. A live, real-time summary of what is being said is typed by the notetaker in your lectures, seminars or one-off university sessions. The notetaker will link these notes to a second screen for you to read them from live. After the session these notes are sent to you in your style and format preference.

Study assistant

Study Assistants can fulfil a variety of roles where support is required for consecutive and irregular periods of time. This includes assisting you in finding appropriate solutions for queries and problems to help reduce anxiety levels, manual notetaking, library assistance, practical assistance, as well as orientation support around campus.

Other specialist support options

There is other one-to-one funded specialist support available, for example specialist transcription services, and sign language interpreting. Contact us to discuss your needs.

Sat, 02 Dec 2017 01:44:00 -0600 en text/html
Group Help/Study Opportunities

In a relaxed environment, these student-led, question and answer sessions provide you with encouragement and support while permitting you to come and go as needed. Remember, all ASC services are free!
Three Hope students during a group study session

Please check with individual departments for up-to-date drop-in group help/study session offerings. Additional information will be available shortly after the start of each semester.


Accounting Help Sessions
Wednesdays and Thursdays, 5:30-7:30 p.m.
VanZoeren 153
Led by upper-level asccounting students


Peer-Led Help Sessions
Thursdays, 6:30–9:30 p.m.
Schaap 3130
Led by upper-level chemistry students

Computer Science
CSCI 112, 125, 235, 245, 255
Sundays, 6–8 p.m.
Mondays–Thurdays, 7–9 p.m.
VanderWerf 115
Led by computer science students
Education 225
Help Session
Tuesdays, 11–11:50 a.m.
Van Zoeren 245
Led by Professor Susan Cherup

Engineering 100 Help Sessions
Sundays–Thursdays, 7–9 p.m.
Van Zoeren 134
Led by upper-level engineering students

Engineering 210 Help Sessions
Wednesdays, 7–9 p.m.
VanderWerf 228 (CAD Lab)
Led by upper-level engineering students

Engineering 220 Help Sessions
Tuesdays, 7–9 p.m.
Van Zoeren 134
Led by upper-level engineering students

Thursdays, 12:30–1:30 p.m.
Schaap 3128
Led by engineering faculty


Japanese Assistance
Mondays and Wednesdays, 12:30–1:20 p.m.
Fridays, 4:10–5 p.m.
Martha Miller 231
Led by Professor Tsuda

Japanese 101 Drill Sessions
Monday, 4–5 p.m.
Martha Miller 242

Friday, 4–5 p.m.
Martha Miller 243

Japanese 201 Drill Sessions
Monday, 5–6 p.m.
Martha Miller 242

Drop-in help for students enrolled in quantitative courses
Mondays–Thursdays, 7:30–9:15 p.m.
Schaap 1118
Led by upper-level math students
*For students in a math or quantitative course

Physics 105 and 121 Help Sessions
Mondays, 6:30–8:30 p.m.
VanZoeren B24
Led by upper-level physics students

Thursdays, 6:30–8:30 p.m.
VanZoeren 151
Led by upper-level physics students 

Fri, 14 Aug 2020 00:04:00 -0500 en text/html
Computer Support Specialist No result found, try new keyword!Computer support specialists help with log-in difficulties ... the person who answers on the other end is typically a computer support specialist. These tech savants work in a variety of settings ... Wed, 03 Jan 2024 10:00:00 -0600 Ozempic could help curb alcohol abuse, study reveals

The latest weight loss craze could also help people control their drinking.

Semaglutide treatments such as Ozempic and Wegovy have been shown to reduce the symptoms of alcohol use disorder (AUD), according to a study published in The Journal of Clinical Psychiatry on Nov. 27.

The collaborative study from The University of Oklahoma (OU) and Oklahoma State University (OSU) found a “significant and noteworthy decrease” in the Alcohol Use Disorders Identification Test (AUDIT) scores of six patients who were receiving semaglutide treatment for weight loss.

Lead study author Dr. Jesse Richards, director of obesity medicine and assistant professor of medicine at the OU-TU School of Community Medicine, said the study was inspired by his conversation with Dr. Kyle Simmons, professor of pharmacology and physiology at the OSU Center for Health Sciences.

“I had been hearing from a significant number of patients that their alcohol intake was spontaneously decreasing while [they were] on the medication,” Richards told Fox News Digital.

As a bariatric surgery clinic employee, Richards noted that it’s standard to screen patients for alcohol use.

Studies found that there was a decrease in Alcohol Use Disorders Identification Test (AUDIT) scores for six patients receiving weight-loss treatments. AP

At the clinic, a number of patients tested positive for alcohol consumption, sometimes in concerning amounts.

Later, while on semaglutide medication, they reported reduced alcohol intake.

One of Richards’ patients — who previously drank large amounts of alcohol — shared a new inability to drink more than two cans of beer now because it “just doesn’t sound good.”

After semaglutide medication, a patient who formerly drank beer regularly began to think that alcohol just didn’t “sound good.” Getty Images

This response piqued Richards’ interest in learning more about patients’ aversion to alcohol, which directly correlated to his research.

Research has shown that this effect is “mediated through adjustments in the reward pathway in the brain,” he said.

“The GLP-1s are actually modifying dopamine, decreasing the craving and decreasing the motivation to acquire things in that compulsive intake category.”

The most surprising takeaway from the study, Richards said, was that the same significant treatment response was seen even at very low doses.

“We found that even patients on the lowest dose of semaglutide — a quarter milligram — had a quite significant and relatively … quick onset reduction in alcohol intake,” he said.

Of the six patients studied, all but one were on low doses — from a quarter to a half milligram.

“And that’s very encouraging because we know that the lower doses of these medications are tolerated much better,” said Richards.

While the results seem promising, the doctor said he does not recommend that patients use semaglutide treatments for alcohol use disorder at this time, due to supply and safety issues.

“If patients have [obesity and diabetes] indications for the medication and they also struggle with alcohol intake … having them on this treatment may potentially be beneficial,” Richards said.

Due to medication shortages and a lack of long-term data, it may not be advisable to take Ozempic to target alcoholism specifically. NurPhoto via Getty Images

“But because there has been a global medication shortage, and because we don’t have prospective trials and don’t know what the specific safety is versus the well-established safety data in obesity and diabetes, [I] would not recommend it just for patients who have AUD.”

There are three FDA-approved drugs available for alcoholic use disorder that are currently underused, the doctor noted.

Given that five million people in the U.S. are currently taking semaglutide medications, if it is proven that those drugs have a significant effect on alcohol use disorder, “by default, they are going to become the most widely used drug to improve these symptoms — just by virtue of the fact that so many people are on them for diabetes or obesity,” Richards noted.

Trials are underway to gather more information on the weight-loss medication and its effect on alcohol intake. UCG/Universal Images Group via G

He confirmed that additional research is underway with two ongoing trials.

“Since we were able to show clinically meaningful reductions in alcohol intake and AUD symptomatology in a real-world setting, that bodes very well for these types of medications,” he said.

Looking ahead, Richard said there is a need for higher-quality evidence of the medication’s impact on AUD compared to placebo drugs or environmental factors.

People struggling with alcohol use should speak with their healthcare provider. Getty Images

Even though it’s unclear whether GLP-1 producers will market the medication to AUD patients in the future, Richards said this could become an “established medical practice once the safety and efficacy has been determined.”

For patients who struggle with AUD, Richards recommended they talk to their health care providers about available treatment.

He also alerted patients that if they experience a reduced appetite and usually consume “a bunch of calories” in alcohol, it may be necessary to look into a more balanced diet.

Avantika Waring, 9amHealth’s chief medical officer and a trained physician and endocrinologist in San Francisco, applauded the OU and OSU study findings for further supporting what clinicians “are already seeing in practice,” she told Fox News Digital.

“GLP-1 medications have a lot of effects that we are still learning about, and the ability to decrease cravings and the reward signals related to alcohol use are just some of the benefits,” she said.

“It’s an important starting point for further clinical trials,” she added.

Waring also warned that GLP-1 medications should not be used to treat AUD specifically, as they can cause side effects such as nausea and changes in appetite.

“People struggling with alcohol use disorder should consult with their physicians before starting GLP-1 medications to make sure that they can stay hydrated and safe on therapy,” she said.

Waring noted that if ongoing clinical trials find semaglutide treatments to be effective for AUD, the medical community will “have another tool to help people living with alcohol addiction and we’ll see expanded use of these already popular drugs.”

Fox News Digital reached out to Novo Nordisk for comment on the potential link between semaglutide medications and alcohol use disorder.

Sun, 10 Dec 2023 02:53:00 -0600 en-US text/html Study Suggests Horticulture Therapy Could Help Fight Depression No result found, try new keyword!A study suggests that horticulture therapy, which focuses on gardening activities, may help reduce depression symptoms in older adults. The greatest benefits were found when therapy lasted 4-8 ... Thu, 14 Dec 2023 10:00:00 -0600 en-us text/html How Crying Can Help You, Here Is What A Study Says

They say that there's no sense in crying over spilled milk. But what do they know? Crying can get you another glass of milk if you do it loud enough. Plus, crying may serve a real physiologic purpose, according to a study published recently in Emotion, meaning the journal and not in an Emo-kind of way.

For the study, three researchers from the University of Queensland (Leah S. Sharman, Genevieve A. Dingle, and Eric J. Vanman) and one from Tilberg University (Ad J. J. M. Vingerhoets) recruited 197 female undergraduate students. They said that they choose all women rather than including men because pilot testing of sad videos had revealed that more women than men cried or at least more women revealed that they were crying. This did not account for the men who cried inside or used some bro-language or high fives to hide the crying.

The research team then showed each of the study participants either a video that are supposed to make them feel sad (sad videos) or a video that was not supposed to elicit any emotion (neutral videos) like something from a documentary or a ted talk. Each video lasted for close to 18 minutes. After the video, the researchers noted whether or not each participant had cried while watching the video. Ultimately, 65 participants watched the neutral video, 71 watched the sad video and cried during it, and 61 watched the sad video and did not cry. Presumably, no one cried during the neutral video. But then again, actor Bryce Dallas Howard was able to cry when Conan O'Brien talked about Home Depot in this Conan clip:

Then, each participant underwent a Cold Pressor Stress Test (CPT), which involved placing the participant's left hand, up to the wrist, in cold 0° to 5°C water. Unless you are the Iceman or Killer Frost, this is supposed to be painful. The research team measured how long each participant could stay in this position until pulling her hand out of the water. During the study, the research team continuously measured each participant's heart rate and respiratory rate and periodically measured cortisol levels from saliva samples. Cortisol is a stress-hormone that's produced by the body.

Also, at four points during the study, participants answered questions from the Positive and Negative Affect Scale short form (PANAS). These questions asked the degree to which the participant was experiencing ten different emotions and to rank each on a five-point scale that ranged from a one (very slightly or not at all) to a five (extremely).

When it came to cortisol levels and how long the participants could keep their hands submerged in the cold water, the study ended up finding not much difference between the neutral video watchers, the sad video non-criers, and the sad video criers. So if you are about to dunk yourself in cold water or take a cold shower, it may not help to cry first.

But here's a difference that the study found. Are you ready? Take a deep breath. The difference was breathing rates. While watching the videos, the non-criers tended to have elevations in their breathing rates, whereas, by contrast, the criers tended to maintain their initial breathing rates. In other words, tearing up could have helped participants better control their breathing rates. This provides further evidence that crying may help you better regulate arousal, serving as an emotional release.

Another interesting finding was that right before crying, participants tended to experience decreases in their heart rates, seemingly in anticipation of the crying. Once the crying began, their heart rates then tended to creep back up but not above where their heart rates had been before everything began. This may be further evidence that crying has a beneficial regulatory effect on your physiology.

So perhaps next time you start crying you can tell people that you are regulating your physiology. You've probably heard of people saying that they had a good cry and feel better after they've let the tears flow. It can be important to find reasonable ways to periodically release your emotions. Otherwise, you may end up bottling everything up like a hot air balloon that can explode when you least expect it.

Moreover, crying can be a way of communicating. It's really the only way that babies can express their needs before they learn how to say things like "why you throwing shade on me," or "I'm not Gucci." Crying can help communicate to others that you need more sympathy, comfort, or help. Of course, this can be misused. You don't want to cry every time your order at a restaurant doesn't come out right. And of course, there is the whole concept of crocodile tears: people crying to get something when they don't really mean it.

Crying can also be a way of communicating with yourself. Even when you cry alone, you may be telling yourself about your own state because, like many people, you could be terrible at reading your own emotions and situation. Tears could be your body's way of saying, "hey, take a break," or "something's not right," or "take care of yourself." Tearing up can then be a way of your body literally crying out to you.

Your body is a complex system. Crying can be complex. Your tears can flow when you are very sad, very angry, or even very happy. Better understanding what causes us to cry and what happens as a result could help us better handle our emotions and stress.

Sun, 21 Jul 2019 07:48:00 -0500 Bruce Y. Lee en text/html
New study finds intermittent fasting could help weight loss, hypertension and mood New study finds intermittent fasting could help weight loss, hypertension and mood - CBS News

Watch CBS News

A new study published in the JAMA Internal Medicine found eating only between the hours of 7 a.m. and 3 p.m. could help people lose weight and treat hypertension. Good Housekeeping's deputy nutrition director and registered dietician Stefani Sassos joins "CBS Mornings" to discuss the study's findings and limitations.

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Wed, 06 Jul 2022 09:10:00 -0500 en-US text/html
Study: Light Therapy May Help Ease Symtoms of Alzheimer’s Disease Like Sleep, Mood

Fact checked by Nick Blackmer

  • New research found that light therapy may be useful in reducing sleep issues and psychobehavioral symptoms associated with Alzheimer’s disease.

  • Experts note that people doing light therapy should aim for 2–3 sessions per week, with each session ranging from 10–30 minutes.

  • More research is needed for clinical certainty regarding light therapy and Alzheimer’s disease, though it could be a valuable, complementary approach to treating the condition in years to come.

Light therapy could be a useful tool to ease Alzheimer’s symptoms, a new study finds.

Previous research has found that 90% of people living with Alzheimer’s experience psychobehavioral symptoms, and 70% of people living with Alzheimer’s experience sleep disorders.

“These often disruptive symptoms are the primary reasons for placement in a care facility, and for increases in caregiver burden and distress,” Claire Sexton, DPhil, senior director of scientific programs and outreach at the Alzheimer’s Association, told Health.

“Until we can stop or prevent the disease, it is essential that we effectively treat Alzheimer’s in those living with it, and improve quality of life for the person and family,” she said.

New research, a meta-analysis of 15 randomized controlled trials published earlier this month in PLOS One, found that photobiomodulation—a type of light therapy—can improve the sleep and psychobehavioral symptoms in people with Alzheimer’s disease.

The study was small, but a variety of therapy options were analyzed. Sexton explained that the size implies that the results can’t be translated into recommendations for individuals.

Rather, the work emphasizes the need for further research, as well as shared and standardized protocols going forward.

“It is very important that the Alzheimer’s/dementia research field addresses and effectively treats the challenging symptoms and behaviors common to people living with Alzheimer’s, in addition to treating the cognitive symptoms, changing the course of the disease, and eventually preventing Alzheimer’s and all other dementias,” she said.

Here’s how light therapy may help those with Alzheimer’s disease.

Light Therapy’s Range of Benefits May Directly Ease Alzheimer’s Symptoms

There are a variety of light therapy options, but the new study focused specifically on photobiomodulation to see how it impacted people with Alzheimer’s.

Photobiomodulation is the use of light (typically using red light) for modulating cell function, Dale Bredesen, MD, a neuroscience researcher, neurodegenerative disease expert, and author of The End of Alzheimer’s, told Health.

“It has a wide range of effects, from reducing pain to increasing healing, reducing inflammation, improving sleep, and enhancing cognition,” he said.

During light therapy, the light is absorbed by cells and provides energy support, he explained. This also increases blood flow.

According to the study, light therapy can help people fall asleep faster, reduce nocturnal insomnia, increase total sleep time, and improve sleep quality. It also can improve cognitive function, enhance quality of life, and reduce caregiver burden in people with Alzheimer’s.

Some of these physical benefits could be due to the effect that light therapy has on melatonin, Bredesen explained, which is directly tied to sleep. Meanwhile, improvements in behavior could be tied to the fact that light therapy reduces inflammation and improves blood flow, he said.

“Light therapy...also influences serotonin and dopamine levels, contributing to improved mood and cognitive function,” Logan DuBose, MD, a geriatrics specialist and co-founder of Olera, a dementia care group, told Health.

He explained that the combined impact on neurotransmitters makes light therapy a valuable intervention for enhancing sleep quality and psycho-social well-being.

For light therapy to be useful, Bredesen explained that people usually need two to three sessions of therapy per week—ideally 10 to 30 minutes per session. Most often, light therapy is used in the evening, though if people are particularly struggling with waking up, they may prefer to do it in the morning, he said.

“Light therapy can improve sleep patterns, reduce night-time restlessness, and address mood-related symptoms and sundowning, fostering better overall psycho-social well-being,” said DuBose.

He explained that, additionally, light therapy’s influence on circadian rhythms has been associated with cognitive benefits.

Consequently, DuBose said that light therapy could potentially preserve cognitive function and slow cognitive decline in people with Alzheimer’s.

This, ultimately, could enhance the overall quality of life for those affected by Alzheimer’s disease.

But, More Light Therapy Research Is a Must

While the results of the study are encouraging, more research is needed for any clinical certainty on how light therapy impacts Alzheimer’s.

It is possible that this non-invasive treatment option could become an important tool for managing some symptoms associated with the disease, but it is too early to recommend it as a protocol for treatment.

“The results [of this study] suggest that the combined evidence, though modest in scale, is encouraging but preliminary, and justifies further research in larger, more representative study populations,” Sexton said.

She explained that if additional research indicates that light therapy can be used for Alzheimer’s, it would be a valuable non-pharmacological intervention that’s safe, non-invasive, and perhaps more cost-efficient than other options.

While light therapy research is still in its infancy, it may be a complementary approach to Alzheimer’s alongside other treatments in the future.

If you have any questions or concerns about light therapy or how it could impact your health circumstance, consult a trusted healthcare professional.

Related: What Is Red Light Therapy?

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