mechanistic
Analysis v1
Strong Support
As people get older, their bodies have a harder time getting and keeping an erection because the blood vessels in the penis don’t produce enough of a key chemical (nitric oxide) to relax and let blood flow in—even though the body tries to make up for it by producing a different version of that chemical.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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An Overview of NO Signaling Pathways in Aging
Narrative Review
2021 Jul 27As people get older, their bodies make less of a key chemical (nitric oxide) that helps get and keep erections, mainly because the blood vessels don’t work as well — and this study confirms that.
Contradicting (0)
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No contradicting evidence found
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.