I have watched the net over the past years, develop the term
BFS. It is not a diagnosis but only a descriptive term used for the symptoms.
During this time the studies on magnesium intake in the diet have paralleled the BFS term... up to 70% and maybe more do not get the RDA of magnesium from the diet. Or they lose it quickly thru lifestyle choices. Caffeine and alcohol increase magnesium excretion, and so does glucose intolerance and diabetes.
In fact heavy daily exercise may deplete it more, since magnesium is used by mitochondria to make the membranes of those energy factories more efficient. It is also used by muscles along with pyridoxal, to metabolize carbohydrates.
Quote:
Magnes Res. 2006 Sep;19(3):180-9.
Update on the relationship between magnesium and exercise.
Nielsen FH1, Lukaski HC.
Author information
Abstract
Magnesium is involved in numerous processes that affect muscle function including oxygen uptake, energy production and electrolyte balance. Thus, the relationship between magnesium status and exercise has received significant research attention. This research has shown that exercise induces a redistribution of magnesium in the body to accommodate metabolic needs. There is evidence that marginal magnesium deficiency impairs exercise performance and amplifies the negative consequences of strenuous exercise (e.g., oxidative stress). Strenuous exercise apparently increases urinary and sweat losses that may increase magnesium requirements by 10-20%. Based on dietary surveys and recent human experiments, a magnesium intake less than 260 mg/day for male and 220 mg/day for female athletes may result in a magnesium-deficient status. Recent surveys also indicate that a significant number of individuals routinely have magnesium intakes that may result in a deficient status. Athletes participating in sports requiring weight control (e.g., wrestling, gymnastics) are apparently especially vulnerable to an inadequate magnesium status. Magnesium supplementation or increased dietary intake of magnesium will have beneficial effects on exercise performance in magnesium-deficient individuals. Magnesium supplementation of physically active individuals with adequate magnesium status has not been shown to enhance physical performance. An activity-linked RNI or RDA based on long-term balance data from well-controlled human experiments should be determined so that physically active individuals can ascertain whether they have a magnesium intake that may affect their performance or enhance their risk to adverse health consequences (e.g., immunosuppression, oxidative damage, arrhythmias).
PMID:
17172008
[PubMed - indexed for MEDLINE]
|
from
http://www.ncbi.nlm.nih.gov/pubmed/17172008
A good resource to help athletes consume more magnesium from foods is:
http://www.slowmag.com/
This dosage form was developed with doctors in mind, when the oxide form that was historically used before was discovered to be useless as a supplement. However, this dosage form remains over the counter, and does not require a prescription. The average dose is one tablet twice a day.
In fact more and more discussion is available now on the net along with studies to show that heavy running habits, are not as healthy as people used to believe:
http://www.latimes.com/science/scien...202-story.html
This might be due in part to the heavy requirements the body has for magnesium, and since most people don't even get the RDA, the extra load needed for heavy exercise creates the potential for damage.
We have seen in an extended family member, who was a pilot in the Air Force, and is now retired and a commercial pilot.. who did his running as part of his fitness routine... he has had to have both hips replaced recently (and he is only in his 50's.)
The wear and tear he has experienced has this price for him.
There are many more articles like this on the net:
http://www.bbc.com/news/health-31095384
So moderation is the key, and also paying attention to the nutrients you need to exercise safely.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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