I ran a low-dose aspirin protocol for 14 months. Eighty-one milligrams every morning, with food, because I had read the mechanistic case and it seemed like cheap insurance. My HRV was trending up, my glucose was clean, my lipid panel was fine. I was, by every measure, a healthy adult who had no business taking aspirin daily. I stopped six months ago after actually reading the USPSTF data instead of the 2003 summary someone had forwarded me. That was a bad protocol. I am telling you so you can skip it.
The current consensus is not ambiguous. The U.S. Preventive Services Task Force has made the call: for adults without a prior heart attack, stroke, or stent, the bleeding risk from daily aspirin outweighs the cardiovascular benefit. For adults 60 and older specifically, the math is worse. The increased likelihood of gastrointestinal bleeding, ulcers, and hemorrhagic events exceeds whatever protection the platelet inhibition provides. This is not a fringe position. The American Heart Association says the same thing: if you have not had a cardiac event, you should only take aspirin if a clinician has specifically told you it is safe for your situation.
The Stack That Looked Smart in 2005
The aspirin-for-everyone era made a certain kind of sense when it started. Platelet aggregation causes clots, aspirin disrupts platelet aggregation, therefore aspirin prevents clots. Clean mechanism. Cheap intervention. The problem is that aspirin's effects last 7 to 10 days per platelet cycle, which means daily dosing accumulates systemic effects that go well beyond your coronary arteries. Your gut lining takes the hit. GI events hit roughly 1 to 2 percent of daily users annually, which sounds small until you multiply it across millions of people self-prescribing a drug they do not need.
There is a legitimate timing debate worth knowing about: evening aspirin may provide better cardiovascular protection than morning doses because cardiovascular risk peaks in the morning hours, and platelet cycles mean evening dosing could position the drug's peak effect closer to that window. I find this genuinely interesting from a systems perspective. But it is only relevant if you have a clinical reason to be on aspirin at all. Optimizing the timing of a protocol you should not be running is not optimization. It is noise.
Who This Actually Applies To
To be fair to the people still running this: the old guidelines were real, doctors recommended it broadly, and the shift happened gradually enough that a lot of healthy adults just never got the update. That is a reasonable explanation. It is not a reason to keep going.
Secondary prevention is different. If you have had a cardiac event, if you have a stent, if your cardiologist has assessed your specific clot risk against your bleeding risk and said yes, aspirin is the right call, then the 75 to 100 mg daily dose has solid evidence behind it. That is the population this drug was always best suited for. The problem was the extrapolation to everyone else.
My n=1 experiment told me nothing useful because I had no outcome to measure against. My cardiovascular risk at 34 was already near zero. I was not preventing anything. I was just irritating my stomach lining for 14 months and calling it a protocol.
If you are healthy, have no diagnosed cardiovascular disease, and nobody has specifically prescribed this for you: the aspirin bottle in your cabinet is not a longevity investment. It is a liability. Pull it from the stack.
