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well, I cant say this for ibuprofen...but aspirin in of itself is quite safe. anyhow, if I want to avoid aspirin, I'd go for omega3s + metformin

All drugs have risks. It is a question of weighing risk vs benefits. For most people low dose aspirin will not be a problem but there are certain subpopulations (those at high risk of bleeds/renal problems etc) where it should not be taken due to the increased risk involved. It is a matter of educating yourself.

I agree, with the addendum: educating + experimenting with oneself :)