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Showing posts with label beriberi. Show all posts
Showing posts with label beriberi. Show all posts

Friday, November 30, 2007

B vitamins in Sports Drinks - are some manipulated for appearance at the expense of health?

"Ever notice the "sports waters" don't tend to have b1 or b2 in them if they are clear? because they make the water look like the colour of urine, not a good marketing look so they will happily sell you water that is not balanced properly with b vitamins and encourages deficiency of the all important vitamins B1 and 2 which are often short in modern diets to start with."
Wayne
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Gary Moller comments:

During our long sunday mountain bike ride today my cycling mate, Ioasa, purchased a bottle of Mizone sports water with vitamins. Wayne; you are right - the B vitamins that detract from the pristine clear colour were missing!

The B vitamins are essential for many metabolic actions in the body. During times of growth and stress, including exercise, their need increases. The typical refined carbohydrate diet that one often sees in athletes, the elderly and young people is deficient in the B vitamins. B vitamin deficiency may be precipitated by courses of antibiotics that wipe out the bacterial flora of the digestive tract. These bacteria are important for the production and absorption of these vitamins and other nutrients.

I have come across several cases of beriberi, a 3rd world disease related to B1 deficiency, here in Wellington. The common thread of all of these cases is excessive antibiotic use associated with ill health, such as infection following joint replacement. Symptoms include burning, painful feet, numbness and loss of function, such as partial paralysis of the arms and hands. It can be exasperating to see these poor people undergoing numerous tests, such as nerve conduction tests and to be placed on powerful drugs like prednisone. Exasperating when the solution is as simple as a course of intestinal probiotics, cheap B vitamin supplements and good food. When the medical specialist is in charge, I feel bound to bite my tongue.

Athletes may benefit from additional B vitamins. I agree with Wayne that these should be provided in balance. If one is going to take supplementary B vitamins, I think it is wise to take them all unless there is a clear case for one or the other and not the lot. The only debate is what constitutes a balance. I certainly would not be taking drinks that have some of these vitamins excluded so as not to affect the clear colour of the drinks.

When exercising, pure clean water is best. Take your vitamins before and after along with good food. Give preference to vitamins that are naturally sourced and avoid the cheap synthetics that are of questionable value.

If any readers have contacts within the sports drink industry, please refer this article to them for comment. Their views would be appreciated. Is marketing expediency taking precedence over sensible nutrition?
B vitamins
This family of vitamins consists of thiamine (B), riboflavin (B), niacin (B), pantothenic acid (B), pyridoxine (B), biotin, folic acid (B), and cobalamin (B). They are interdependent and involved in converting glucose to energy.

The B vitamins are water soluble and are not stored in tissues to the same extent that the fat soluble vitamins are. Deficiency illnesses of B vitamins, such as pellagra (from lack of vitamin B3) or beriberi (from lack of vitamin B1), are not common, however, we typically do not get optimal levels of these important nutrients. Aside from proper cell metabolism, the B vitamins enhance immune function and function within the nervous system. They are also extremely important for healthy cardiovascular function. It has also been documented that adequate intake of these B vitamins can help with stress and altered mood.

Sunday, December 31, 2006

Poor Athletic Performance Linked To Vitamin Deficiency

Science Daily — Active individuals lacking in B-vitamins -- including college athletes and other elite competitors -- may perform worse during high-intensity exercise and have a decreased ability to repair and build muscle than counterparts with nutrient-rich diets, according to recent Oregon State University research published in the International Journal of Sport Nutrition and Exercise Metabolism.

The B-vitamins include thiamin, riboflavin, vitamin B-6, B-12 and folate. These micronutrients are necessary during the body's process for converting proteins and sugars into energy, and are used during the production and repair of cells, including red blood cells.

For active individuals a marginal deficiency in the nutrients may impact the body's ability to repair itself, operate efficiently and fight disease, said Melinda Manore, researcher in the Colleges of Agricultural and Health and Human Sciences. Manore analyzed the athletic performance of several elite and collegiate athletes in her research, as well as less competitive individuals.

The stress on the body's energy producing pathways during exercise, the changes in the body's tissues resulting from training, an increase in the loss of nutrients in sweat, urine and feces during and after strenuous activity and the additional nutrients needed to repair and maintain higher levels of lean tissue mass present in some athletes and individuals may all affect an individuals B-vitamin requirements, said Manore.

"Many athletes, especially young athletes involved in highly competitive sports, do not realize the impact their diets have on their performance," said Manore, who is also an Extension Service nutrition scientist. "By the time they reach adulthood they can have seriously jeopardized their abilities and their long-term health."

Current national B-vitamin recommendations for active individuals may be inadequate, and athletes who follow the recommended daily allowances set by the U.S. government may be receiving lower amounts of nutrients than there bodies need, said Manore.
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Gary Moller comments:
The B group of vitamins is especially important for any person who is under stress, be that physical or emotional - which probably applies to 99% of the population! Stress not only steps up the body's need for these vitamins, it also chews through them at a higher rate. While a wholesome diet will supply the RDA (recommended daily allowance) this is not the case when the body is under constant stress.

Stress also chews through magnesium. Organs, like the adrenals, require ample magnesium, as well as the B vitamins, to function poperly.



Let me tell you about Beriberi. Beriberi is a third World disease, causing paralysis and heart failure. It is unheard of in a well-nourished country like New Zealand (Last seen on the sailing ships that carried explorers to this far-flung land 150+ years ago). Beriberi is caused by chronic thiamine (vit B-1) deficiency. Well, I can tell you that I have seen two severe cases over recent years in older men who have been in ill health which has caused enormous stress and affected their digestion. They have suffered varying degrees of nerve damage, inclusing limb paralysis. Frustratingly, treatment has consisted of powerful medications, including large doses of prednisone. Needless to say, this has been without any benefit.

All they required was a diet rich in B vitamins and a quality B vitamin supplement. Modern medicine can be very frustrating at times. I'll write more about this later.