Tag Archive for: depression

Can Cutting Calories Improve Your Mood?

In research like the CALERIE study, there’s a tendency to focus on physical changes but what about mood, depression, and quality of life (QOL)? Did researchers find changes in those variables as well? Let’s take a look. While the two-year span of the data analyzed varied slightly from other phases of the study, physiological results were virtually identical to the other phases I’ve talked about in previous Memos.

Testing Procedures

For those readers familiar with the assessment tools typically used in measuring psychological variables, here’s a list of the instruments they used.

Mood: Beck Depression Inventory-II [BDI-II] and the Profile of Mood States [POMS]

QOL: Rand 36-Item Short Form and Perceived Stress Scale

Sleep: Pittsburgh Sleep Quality Index [PSQI]

Sexual function: Derogatis Interview for Sexual Function Self-report

Results

For simplicity’s sake, I won’t use numbers to report the results, because unless one is familiar with the scale for each assessment it wouldn’t be meaningful. Every following relationship was statistically significant or correlated. Compared with the ad libitum (AL) group, the caloric restriction (CR) group had significantly improved mood, reduced tension, and improved general health and sexual drive at month 24. Sleep duration had improved by month 12 and was sustained through month 24.

Greater percent weight loss in the CR group at month 24 was associated with increased vigor and less mood disturbance, improved general health, and better sleep quality. The researchers concluded that there was no negative impact of CR on psychological variables in normal-weight people.

I have a tendency to put more faith in measurable variables such as blood pressure or heart rate than inventories and questionnaires, but the results demonstrated that all measures moved in a positive direction when restricting calories: better perception of mood, health, QOL, more and better sleep, and even sexual vigor. There are indications that CR may be beneficial even in people who are normal weight.

What are you prepared to do today?

        Dr. Chet

Reference: JAMA Intern Med. 2016 Jun 1;176(6):743-52.

Science at Work

The challenge this week was to watch two video podcasts, think about what you heard, and then provide comments and questions. For those of you who did it, thank you. For those that didn’t, I recommend that you take some time this weekend and listen to them. I’m going to share my thoughts but there’s so much information, I’ll hit only the highlights. Suffice it to say, based on the questions, there are many subjects that will need to be explained. That will take months to research and present in Memos and Insider conference calls in a way that’s understandable.

The point of the interviews with Dr. Jay Lombard was to find out the relationship between the microbiome and pathogenic bacteria and neurodegenerative disorders (NDD). That includes everything from Alzheimer’s disease to depression to Parkinson’s disease. Here are the three things that stood out to me out of the many concepts presented.


Three Things I Learned

Leaky Brain Theory
The prevailing thought is that the blood-brain barrier prevents almost everything from entering the brain via a series of tightly packed blood vessels and cells. Nutrients are let through along with some medications, but bacteria are thought to be barred.

But evidently the toxins of some pathogenic bacteria are able to cross this barrier and affect the production of the proteome, an organism’s complete set of proteins. Remember the tau mice from last week’s Memos? The bacterial toxins impact the way the tau and other proteins are folded, which renders them unusable, thus resulting in misshapen structures that can contribute to NDD depending on which proteins are affected.

Antibiotic-induced Reduction in Fevers
In the treatment of patients with NDD, one characteristic that most seemed to share is the inability to get significant fevers with infections. The cause appears to be chronic use of antibiotics over a lifetime which somehow reduces the ability of the immune system to create high fevers. The rise in temperature is a natural part of the immune system when dealing with infections; without it, the immune system will not be as effective at combating viruses or bacteria.

Heat-Shock Proteins
Think of heat-shock proteins as the “cleaners” of the body. One of their functions is to collect the misshapen proteins and take them to the organelles inside a cell; that’s where they’re taken apart and the amino acids reused. If you can’t generate a fever that’s high enough, they can’t do that job as well.

There were several other items on my list, but those were the most profound. The first question in your mind is most likely “What can I do about these?”


How Science Works

The reason I chose to focus on Dr. Lombard with the purpose of showing how science works was two-fold. First, he asked good questions. Many physicians would think “How can I fix this?” and stop there. What Lombard and Hyman asked was “What caused this?” or “How did this happen?” You find that out only by asking the right questions of patients.

The second is that Lombard went to the current research to find out if there were any answers, and he discovered where he might have been incorrect because someone had tested it. Remember that in the first interview he was sure that the bacteria C diff was related to ALS; two years later he found that there was more than a single pathogen that could be related to ALS and other NDDs. He learned and adapted his hypothesis: that’s how science is supposed to work. Instead of spending time heading in the wrong direction, science guides the research he’s currently doing so that eventually he may discover effective treatments for these neurological conditions.


The Bottom Line

If you haven’t watched the video podcasts, I urge you to do that; you’ll learn much more than by reading my review. More than that, you’ll have more questions. One of the things both Drs. Lombard and Hyman agreed on is that “we know close to nothing.” I agree wholeheartedly. When you begin by asking the right questions, you have a chance of finding out the answers. Another point they agree on is that there’s no single cause of any NDD. There are multiple factors that contribute; finding out what they are may help develop effective treatments by focusing on a potential cause.

For those of you who want answers, whether about what I’ve written or about the many other things covered in the podcasts, I’ll write more as time goes on to satisfy that “What should I do now?” question. Obviously, you’ll want to keep your microbiome as healthy as possible (a search for the term microbiome on drchet.com will point you in the right direction); beyond that I have questions I need answers to before I can provide more answers for you. I’m on it and when I know, so will you.

What are you prepared to do today?

        Dr. Chet

How Science Works, Part 2

How did you enjoy the first video? If you’re like me, there were some surprises and a whole lot more questions.

The second video is another interview with Dr. Jay Lombard recorded this year. Just like the other video, it isn’t an ad for a product but it does contain ads as do all YouTube videos. While the interviewer is different, the video demonstrates several things, none of which I’m going to tell you. The assignment is for you to learn how science really works. Listen closely to Dr. Lombard. If you want, send your thoughts and questions to [email protected].

Here is the link to the second video: https://youtu.be/aCTTpFnSsD0

We’ll finish this look at how science works on Saturday.

What are you prepared to do today?

        Dr. Chet

How Science Works, Part 1

If there’s one topic we’re all interested in, it’s making sure that we keep our minds clear and able to learn and recall things every day we’re alive. That’s confirmed by checking the number of people who read last week’s Memos on EAAs and brain health.

A long-time reader sent me a link to a video called “Doctor Thinks He Knows What Causes Alzheimer’s, Parkinson’s, and ALS!” I decided to listen to it while I worked out on the bike. It was interesting, so I listened to another podcast with the same doctor two years later. It was at that point I decided to make this a project for you.

Assignment 1 is to listen to a video podcast from Dr. Mark Hyman, a well-known physician who treats the entire patient, not just the symptoms. He interviews Dr. Jay Lombard, a neurologist, on current ideas as to the possible causes of a variety of conditions including depression and Alzheimer’s disease.

When you’re done, write down a couple of things that you learned or had questions about. Enjoy the first video—pay close attention to the last five minutes: https://www.youtube.com/watch?v=ETKZS5e33VA

Tomorrow, I’ll send you a second link to another video. If you listen and watch these videos, I think you’ll begin to learn how science works.

What are you prepared to do today?

        Dr. Chet

Mental Health 2020: Take Control

In the last Memo I said that there are no simple rules to be made whether we talk about the pandemic or politics. These are complicated issues no matter how much we wish they were not. There are no absolute answers, and that results in a loss of control. We appear to have lost control of our lives, and that uncertainty creates anxiety and subsequently depressive symptoms.

Posttraumatic Stress Disorder?

Could this unrelenting stress result in something such as posttraumatic stress disorder (PTSD)? Generally, PTSD is associated with a single traumatic event. After the last presidential election, that term was floated because for over half the electorate, the results were unexpected. Psychologists and psychiatrists were quick to suggest that term didn’t apply.

There have been no studies published on the general population related to PTSD and COVID-19 in the U.S., but research from Italy and China indicates that even though the pandemic is an ongoing stressor, it can potentially lead to a PTSD scenario in some people. Whether it’s called PTSD or given some other name, the loss of control is very stressful to most Americans.

Is It Time for Digital Detox?

Is there anything we can do to ease the current level of stress? One psychologist suggests that we take a social media and digital detox. I have to agree.

You want proof? “Russian interference.” That phrase alone can start a social-media firestorm. I don’t even have to go into the particulars, and people on both sides of the issue have their digital knives drawn. Didn’t you just for that split second get ready to attack, depending on your political persuasion, even though I didn’t say another word? Do you think that’s healthy? I don’t think so.

I think that if you use social media or the Internet, take a break or limit it the time spent on it every day. I certainly have. I believe in a controlled fast to help your body detoxify itself, and the same applies to our mental health. Just as you eat better foods while you detox your body, get back to reading more positive books and magazines to detox your mind. End your online session with cat videos or baby pictures or scripture—whatever makes you smile and feel good.

It comes back to control. You’re in charge of you, and you can control what you do and see. You can’t control what other people say or do. Do you really think you’ll be able to change someone’s mind about politics or the pandemic with what you have to say? When they respond in a vicious way, is that going to help your mental state? Get control of your digital world and detox your brain.

The Bottom Line

We live in challenging times and we certainly live in a constant state of stress. That can definitely impact our mental health whether we realize it or not. As I said, much of what is impacting us today is not under our control.

What we can do is control how we respond to it. Eat better. Eat less. Move more. And clear your mind with a digital detox. It all comes down to one question:

What are you prepared to do today?

        Dr. Chet

References:
1. https://wbur.fm/33q5hHX
2. https://bit.ly/2FsESRN
3. https://bit.ly/3kecphl

Mental Health 2020: The Stats

At this point, there have been no substantive studies of mental health resulting from either the pandemic or the political climate in the U.S. There are metrics that have been tracked via online survey since April; the surveys added modified questions that ask about factors related to the pandemic.

The results for symptoms of anxiety show that 30.8% of respondents indicated more symptoms in late April compared to 31.4% in late August although the percentage fluctuated as high as 36.0%. The results for symptoms of depression ranged from 23.5% in late April to 24.5% in late August with a percentage fluctuation as high as 28.8%.

What do the numbers mean in comparison with pre-pandemic times?
From January to June 2019, 8.2% of adults aged 18 and over had symptoms of anxiety disorder while 6.6% had symptoms of depressive disorder. The current surveys are not perfect and there’s no statistical analysis, but by all appearances we are more anxious and tend to exhibit more depressive symptoms.

I think what contributes to the anxiety is that there’s no simple solution. Humans like binary choices: this is right, that’s wrong. And that just doesn’t apply in this case. Could we be creating a population at risk for a form of posttraumatic stress disorder? Is there anything we can do about it? We’ll take a look at that on Saturday.

What are you prepared to do today?

        Dr. Chet

References:
1. https://www.cdc.gov/nchs/covid19/pulse/mental-health.htm
2. https://www.cdc.gov/nchs/fastats/depression.htm

Thanksgiving Wishes

I got a few questions about the safety of microwaving after my Memos on nutrients in broccoli. In doing the research, I saw no evidence that there were any changes to the chemical composition of the vegetables. The science clearly demonstrates that the phytonutrients were not altered nor decreased. I know the Internet says crazy stuff about microwaves, but the science just doesn’t support any negative effects on the food itself.

I’m not a fan of cooking elaborate meals in a microwave because the heat is not distributed equally, but for steaming veggies and reheating leftovers, no problem. If you really want to maximize your nutrients, save any of the water remaining in the pans or containers for making soup. If minerals or other nutrients leach out, that’s where they’ll be.

Happy Thanksgiving!

Paula and I would like to wish you all a very Happy Thanksgiving. Because this is a busy time of the year, this will be the only Memo this week. Enjoy family and friends—and make sure you eat your vegetables, no matter how you decide to prepare them.

And here’s a tip for easier digestion: abide by the Golden Rule of dinnertime and don’t discuss politics or religion. Especially this year.

What are you prepared to do today?

Dr. Chet

 

Quantifying the Benefits of Nature

When this type of study is published, we can think of it as touchy-feely; in other words, it’s about how we feel more than hard numbers. That may be true on the surface, but let’s take a look at the effect on society from just one benefit of spending time in nature.

The study showed that if people spent just 30 minutes per week in a park, the rate of depression in cities could be reduced by 7%. While they didn’t test it, I would say that’s true for just about anybody who spends time . . .

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Research on Nature and Health

I’m back on the deck to write today’s message about the benefits of spending time with nature (1). Researchers tested over 1,500 subjects who live in urban settings; they wanted to quantify visits to parks in cities with physical measures such as depression, blood pressure, social interactions, and physical activity (2). If you’re a long-time reader, you know I prefer studies with solid measurements such as body weight or cholesterol levels. Surveys and questionnaires are subject to how a person feels at any given moment, but these researchers used the best instruments available.

They found . . .

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Does Nature Improve Health?

One of my favorite places during the summer is on our deck. I just love sitting out there in the cool of the morning. On a calm day with little humidity, it’s great even when the temperature hits the mid-80s; the shade sail helps. Working or relaxing, it’s my favorite place. The flowers. The trees. The birds, especially the frequent visits by hummingbirds. This patch of nature didn’t happen by accident. Over the 15 years we’ve been here, Paula has created a space that soothes the mind, helps creativity, and lifts the soul. That’s . . .

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