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Old 10-28-2006, 11:51 AM   #1
Craig Cooper
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Default Caffeine & Impaired Nutrient Absorption?

I was thinking, since caffeine is a diuretic, would that mean that there is the possibility of it causing you to excrete some water soluble vitamins?
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Old 10-28-2006, 01:46 PM   #2
Robb Wolf
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Hey Craig!
One adapts to the diuretic effects of caffeine pretty quickly so I don't think this would be a problem. Even at a high water intake the kidneys are pretty wiley at reabsorbing, either passively or actively, what we need.
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Old 10-31-2006, 02:59 PM   #3
Craig Cooper
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Robb - Found this study:

http://www.ncbi.nlm.nih.gov/entrez/q...=pubmed_docsum

"Oral doses of caffeine increase the urinary excretion of calcium, magnesium, sodium and chloride for at least 3 h after consumption... no adaptation to the urinary losses occurs with continuing consumption of caffeine"
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Old 10-31-2006, 08:53 PM   #4
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Good stuff Craig! Way to do your homework on that!
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