Ask the Doctor: Why does asparagus make my urine smell?
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Question: Why does asparagus make my urine smell?
Answer: Asparagusic acid contains sulfur and is only found in asparagus. This acid contains sulfur, which is the same thing that makes rotten eggs and natural gas smell bad.
People have been discussing the aromatic effects of asparagus-enhanced urine since the early 1700s. Asparagusic acid happens to be highly volatile, meaning it vaporizes easily. So, when it comes out in your urine, it quickly vaporizes, resulting in an almost instantaneous smell.
And if that isn’t enough, eating asparagus does something else – it adds methanethiol to your urine, a compound associated with fecal odor and bad breath. Nevertheless, in spite of these things, keep in mind that asparagus is loaded with beneficial vitamins and minerals, and is one of the healthiest things you can eat on this planet.
This column does not establish a provider/patient relationship and is for general informational purposes only. This column is not a substitute for consulting with a physician or other health care provider.
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