Quote:
Originally posted by Strife
It's the result of a simple chemical reaction. Asparagus contains a sulfur compound called mercaptan. (It's also found in rotten eggs, onions, garlic, and in the secretions of skunks.) When your digestive tract breaks down this substance, by-products are released that cause the funny scent. The process is so quick that your urine can develop the distinctive smell within 15 to 30 minutes of eating asparagus.
But not everyone has this experience. Your genetic makeup may determine whether your urine has the odor -- or whether you can actually smell it. Only some people appear to have the gene for the enzyme that breaks down mercaptan into its more pungent parts. While eating asparagus may make your urine smell strange, it won't harm you.
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Darn, I was beaten to the punch. I learned that in Biochemistry.