Category: Physical fitness
With all the uncertainty in the economy, more and more people are asking about how to manage anxiety. Although several types of medications can be helpful in coping with anxiety, some of them (drugs in the group of benzodiazepines, such as Valium, Xanax, and Ativan) can actually have a negative impact on your memory. Other patients whom I see simply don’t want to take medicines for their anxiety. Since anxiety and stress can make your memory worse, managing your anxiety should be near the top of your brain fitness list.
Top ways to manage anxiety without medications:
Find out what you’re anxious about, and do something about it. Many patients have vague anxiety and aren’t quite sure what it’s about. See if you can figure it out. Talk to a friend about how you feel. Sometimes just talking about a problem can help make it clear. Another person’s viewpoint may help you to see a problem in another light.
Exercise. Both aerobic (walking, running, bicycling, swimming) and nonaerobic (weight training) can help you manage anxiety. People usually feel less anxious after exercising. If you aren’t exercising now, check with your doctor to make sure it’s OK to start. Even 10-15 minutes a day of walking can make a difference.
Relax and breathe. Researchers long ago noticed that it’s almost impossible to breathe deeply and feel anxious at the same time. Take 10 minutes twice a day to sit quietly, relax the muscles in your neck and back, and breathe fully. If you do this for a week you’ll feel better.
Meditate. Researchers have shown that almost any kind of meditation improves anxiety. I believe that meditation that helps you develop attentional focus will not only relieve stress and anxiety but also improve your memory. Mindfulness meditation is one form of meditation that is very helpful.
Distract yourself. Sometimes you can’t solve a problem but just have to live with it. Even after you exercise and meditate, you may still have to confront a problem over which you have little control. Try to find things that you enjoy doing that can help give you a break from feelilng anxious. Hobbies can often help people distract themselves. Doing something that is intellectually challenging is also good for your brain health.
Focus on stress. Our own, and many other researchers’ work, has shown that stress has a negative relation to memory. Stress may affect how well you can pay attention, and the chemicals it increases in our body (sometimes called stress hormones) may have a negative impact on your body. Whatever the cause, stress has a negative effect on your ability to remember what you want to remember.
What to do? First, check out your stress level. Do you often feel tense, worried, and jumpy? Stress might be the reason. How often do you feel out of control, or as though events have gotten away from you? Those are the sorts of experiences that make for increased stress. People sometimes forget that we adapt to stressors, so that after some time we may not even notice how stressed we are.
Simple ways to control stress include mental “time outs,” relaxation, and exercise. Mental “time outs” mean simply taking a few minutes once or twice a day to shift gears. Stop the headlong rush through the day for just a few minutes. Do something else for 10 minutes, but be sure that you take a few seconds to breathe and mentally shift gears. Still better, practice relaxation for 15 minutes twice a day. Simply sit in a comfortable chair, close your eyes, and focus on relaxing the muscles of your body from your head to your feet. Finally, exercise five times a week. It doesn’t mean that you have to go to a gym and lift weights or train for a marathon. Just walking 30 minutes can make a difference
The most important things are to notice your stress level and make a plan for dealing with it. Your memory will thank you.
A recent study provides a clue into the exercise-brain fitness relation. A paper reported in the December 2008 issue of the journal Neurology shows that high levels of blood glucose (the kind that can happen in people with diabetes) may directly affect the hippocampus. Since the hippocampus is a part of the brain that is essential for memory, this study helps us understand one way in which physical fitness can affect brain function. What’s the link? We know that physical fitness improves the body’s ability to regulate blood sugar levels, so being physically fit may decrease the damage that high blood sugar levels can cause to the hippocampus.
The story is a little more complicated, though (isn’t it always)? Blood sugar is regulated by a hormone called insulin. People who have type II diabetes (the kind that people usually get later in life) have a condition called insulin resistance. This means that the body makes enough, and sometimes too much, insulin. The problem is that the insulin doesn’t have a strong enough effect. This means that the body keeps making higher levels of insulin. Exposing the body to high levels of insulin can cause problems.
In the case of the brain, insulin is very important for its function. Insulin has to cross into the brain from the blood by way of a special mechanism called a transporter protein. When insulin levels are high all the time, the body decreases the number of these transporter proteins, and the brain may not get enough insulin. Some studies have shown that insulin is important in memory function, so a decrease in the number of these transporter proteins may be yet another way that high blood sugar levels can affect memory. While all of these studies are preliminary, they add to what we know about high blood sugar, insulin resistance, and mental functioning.
There are two effective ways of keeping your blood sugar under control: diet and exercise. Following the Mediterranean diet can help, because it emphasizes the kinds of food that will help keep your blood sugar stable. Exercise has been shown to help your body be more sensitive to the effects of insulin. When your body is more sensitive to insulin’s effects, blood sugar levels will be lower and more stable. We know that following the Mediterranean diet and regular exercise can help your memory – their link to blood sugar and blood sugar’s effects on the brain may be why.
The Mediterranean diet is an important part of any brain health program. A number of studies have shown that people who follow the Mediterranean diet have less chance of having a heart attack, and that changing to the diet can reduce risk for another heart attack. Consistent with our increasing appreciation of the relation of heart and brain risk factors, at least one study has shown that people who follow the Mediterranean diet more closely have a lower risk of being diagnosed with Alzheimer’s disease.
Just that may be enough to have you ready to try the diet, but you might wonder what it is and what you’re supposed to eat. That’s where Dr. Michael Ozner’s book comes in. Dr. Ozner is a cardiologist in Miami, Florida, and says that he has been using the diet to treat his patients for more than 25 years. The book includes clinical vignettes in which patients describe their experiences with the diet and how it has helped them. Although Dr. Ozner recommends the often-unpopular practice of counting calories, people who follow the diet may find that they can eat more and still lose weight because of the diet’s emphasis on low-glycemic index foods, fresh fruit and vegetables, and whole-grain breads and pastas.
In clear language Dr. Ozner lays out the reasons why you should be interested in the diet. He gives you an overview of the studies that have shown that people who follow the diet have lower risk for heart disease, and explains why. You may note that many of the elements of the Mediterranean diet have anti-inflammatory and anti-oxidant effects, making it similar in this respect to Dr. Andrew Weil’s anti-inflammatory diet.
But the book has lots more than just a description of the why the diet is important. It also has a complete 14-day diet plan and a wide selection of recipes that any cook can use to make the diet not just healthy but delicious. My favorite section of recipes is the one for pizzas. There is also a section with a number of recipes for desserts that are high in flavor and low in fat.
Overall, this is a very useful book that will help you understand the importance of the Mediterranean diet and will help you get started in following it.
The Miami Mediterranean Diet: Lose Weight and Lower Your Risk of Heart Disease with 300 Delicious Recipes
Hardcover, 432 pages, ISBN 978-1933771502, $25.95.
Click here to order the book from Amazon.
A number of people have asked me whether sleep has anything to do with brain fitness. The answer is, simply, yes. Many people feel as though they aren’t doing very much when they’re sleeping, and I suppose in a sense that’s true. We don’t remember what happened while we are sleeping, and so it doesn’t seem as though it was a very active time.
The truth is, though, that a great deal is happening during sleep. Scientists don’t understand everything that happens while we are sleeping, but we know a great deal about the consequences of not sleeping well.
When we don’t sleep well, we all know we don’t feel quite as sharp the next day. But there’s more. Research shows that when someone is deprived of sleep, they don’t perform as well on cognitive tests as they do when they are well rested. More, some levels of substances associated with inflammation are elevated as well. It looks as though poor sleep over time may have negative effects on your body and mind.
What can you do if you don’t sleep well? Adequate sleep hygiene is the first step. Make sure that you have a quiet place to sleep that is kept at a comfortable temperature. Keep distractions to a minimum. Avoid caffeine and alcohol near bed time. Some people can’t drink caffeinated beverages after noon, and some people have to quit drinking anything with caffeine at all. Smoking can disrupt sleep – nicotine can keep you awake, and some smokers wake up in the middle of night because their levels of nicotine go down during the night. Help your mind and body calm down at least an hour before going to sleep by stopping work or other mentally stimulating activities.
Probably one of the most important things you can do is to have a regular sleep schedule. Go to bed and get up at the same time every day, even on weekends. If you don’t sleep well on one night, don’t try to make up for it by sleeping late. Avoid naps during the day. Naps reduce the pressure to sleep at night, making it less likely that you’ll be able to sleep well. Exercising during the day, and getting exposure to sunlight during the morning may help you regulate the daily rhythms that help you to sleep.
If these things don’t work, see your doctor. A number of sleep problems may require special treatments. A qualified sleep doctor can help you sleep better, and sleeping better is a critical way for you to keep your brain fit.
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Mindfulness meditation as practiced over a long period by experts makes clear changes in someone’s brain function. But what about those of us who don’t have a few years to sit in a monastery in the Himalayas? A new study shows that even brief meditation practice can improve attention.
I saw an interesting blog post yesterday evening on the site of the Huffington Post about the potential benefits of meditation – or at least about what one woman thinks might be the benefits. (more…)
Although many people are excited about the potential for using computers to train their brains, we shouldn’t forget that other techniques have been used to the train the brain for many centuries. I’m thinking about the large number of techniques for meditation. While free computer software still requires an investment in a computer, meditation only asks you to sit or lie quietly and focus your mind.
A recently-published study shows parts of the brain in long-term meditators are larger than the same parts of the brain in people who don’t meditate. The article by Eileen Luders and her colleagues appeared in a recent issue of the journal Neuroimage (Vol. 45, No. 3, pp. 672-678, April 15, 2009). The study showed that portions of the orbitofrontal cortex and the hippocampus were larger in persons who had been regular meditators for 5 or more years. The study is interesting because the parts of the brain that were larger are often thought to be important in helping people keep themselves emotionally balanced.
A number of strategies are likely to be helpful for meditators. There has been a great deal of interest over the last several years in mindfulness meditation. Researchers have studied how it can be used in reducing anxiety and depression. Mindfulness is based on Buddhist meditation (for a brief article, click here) but you don’t have to be a Buddhist to practice meditation. In fact, one of the most important persons who has promoted mindfulness is Jon Kabat-Zinn, a researcher at the University of Massachusetts. You can see a video presentation by him on YouTube by clicking here.