I think its effects on lowering serotonin may also be involved. Lower serotonin means better libido, and poor libido has been shown to be behind 70%+ of ED cases. Hard (pun intended) to get hard when there is no desire.
Aspirin attenuates pulmonary arterial hypertension in rats by reducing plasma 5-hydroxytryptamine levels. - PubMed - NCBI
Moderate depletion of blood platelets around the time of the onset of lung injury lessens the subsequent development of right ventricular enlargement, suggesting a reduction in the pulmonary hypertensive response to monocrotaline pyrrole.
To me it seems that if you have enough platelets you are able to transport serotonin to the lungs more effectively for detox, but due to being poisoned the detox fails and lung damage/hypertension happens which leads to heart damage. Do lungs only detox platelet bound serotonin?
If so, then the answer seems to be aspirin's effect on platelet function. If not,then the effect is probably due to aspirin's effect on serotonin production.
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