Friday, March 30, 2012

Exercise & Vitamin D3 Save Your Noggin!

As a huge Tennessee Lady Volunteer fan, I am very affected and heartbroken by the recent diagnosis of Alzheimer’s Disease at the age of 59 years old in my favorite basketball coach, Pat Summitt.  While some people may have genetic influences that predispose them to this awful disease, lifestyle has been shown to play a huge role in helping prevent decline in cognition (knowledge) as they age with exercise and taking vitamin D3.  As people age, they normally see a decline in cognition and other bodily processes. New research shows that lifestyle factors have a huge influence on protecting that noggin of yours. Evidence supports that you can reduce your risk for dementia and Alzheimer’s by eating right, exercising, staying socially and mentally active, and reducing stress in your life.  You may even be able to reverse the deterioration of your cognition caused by aging by leading a healthier lifestyle. The main topics I am going to touch on today are exercise and vitamin D3 supplementation and their effects on cognition and prevention of disease. 

Physical exercise has been shown to reduce your risk of developing Alzheimer’s disease by up to 50 percent, according to the Alzheimer’s Research and Prevention Foundation (1).  As discussed in my last post about caffeine and exercise, regular exercise also helps reduce stress, improve mood and energy and can even improve memory! How awesome is that?! If you’re pretty sedentary, you don’t have to go crazy about exercise and start jogging, because you will probably injure yourself.  Start slow by adding daily activities that make you move more, such as taking the stairs instead of the elevator, parking farther away from the store and walking, or even taking daily walks outside around your neighborhood.  Even shopping can be seen as exercise….yup, you got it; you’re walking and burning calories.  Nothing like a little retail therapy ladies, right?? It’s easier when you have a partner in crime too, so grab a friend or significant other and take a walk together every night to help ensure you stick to your routine. 

You’re probably wondering why exercise helps improve your brain’s functioning.  Here are some reasons:

1.       Aerobic exercise increases the amount of oxygen in the bloodstream that goes to the brain.  This increased flow of blood (and oxygen) helps to create new blood vessels in the brain where its responsibility is to create/store memories.

2.       Exercise increases the amount of chemicals in the body (dopamine and norepinephrine) that are responsible for helping the brain with attention, memory, and learning.

3.       Exercise increases brain derived neurotrophic factor (BDNF), which is a protein involved in creation of new cells in the brain.  It also helps the brain in resisting damage and degeneration that occurs with aging.

So there you have it folks, exercise is not only good for your body, but it’s good for your brain! You only get one, so you better preserve it while you can.  Another way of doing so is by taking a vitamin D3 supplement.  Vitamin D3 is the form of vitamin D that your skin synthesizes from sunlight and is useful in disease prevention.  Many people will argue that they are in the sun enough and get the daily amount that way (if you don’t live in Wisconsin in the winter! Ha!), however, research shows that 41 percent of men and 53 percent of women in the United States have low vitamin D levels.  Those that have increased pigment in their skin are at higher risk of low levels, as it can take up to 5 times more sunshine for African Americans to get the same vitamin D response as someone with lighter skin pigment.  Not only is vitamin D important in maintaining brain health, it also has been shown to help prevent the following:

·         Cancer

·         Heart disease

·         Stroke

·         Colds

·         Muscle conditions & Osteoporosis

·         Depression

·         Autoimmune diseases

As with any supplement, it is important to talk to your doctor before you start taking one.  This is due to possible interactions with other medications and your body’s ability to metabolize the supplement.  Supplements are not required to be approved by the Food & Drug Administration (FDA), so it is important you ask a health professional about them before use.  The recommended dosage of vitamin D3 has been raised to about 1000-2000 IU/day to ensure prevention of the above diseases; however, research varies and continues to be done and it depends on the person’s body and how they metabolize the nutrient. 

In conclusion, lifestyle factors can help reduce the risk of Alzheimer’s and dementia by up to 50 percent; however, some people may still be at higher risk for the disease secondary to genetic factors.  Regular exercise is beneficial to your cognition by helping improve function of the brain, attention, and memory.  Vitamin D3 has also been shown to reduce the risk of dementia and several conditions/diseases when taken daily at a higher dosage.  So it’s time to start exercising and taking some vitamin D3 to help ensure a longer-lasting healthy brain. 





Resources:



3.       Exercise & Cognition: Can Exercise Make You Smarter Tri-fold by Katie Kowalski, DPT

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