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.
Claim Language
Language Strength
definitive
Uses definitive language (causes, prevents, cures)
The claim uses definitive verbs such as 'impairs', 'reduced', and 'increases', which assert direct causal effects rather than probabilities or associations. The phrase 'primarily through' and 'despite' further reinforce a deterministic mechanistic relationship.
Context Details
Domain
medicine
Population
animal
Subject
Aging
Action
impairs
Target
nitric oxide-mediated erectile function
Intervention Details
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.
Evidence from Studies
Supporting (1)
An Overview of NO Signaling Pathways in Aging
As 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.