Magic Mushrooms could lengthen your lifespan

More importantly, they've helped me live my years better and more enjoyably. "Psilocybin produces substantial and sustained decreases in depression and anxiety in patients with life-threatening cancer: A randomized double-blind trial" https://pmc.ncbi.nlm.nih.gov/articles/PMC5367557/. Might as well get that tattooed on your "taint".

I would not be surprised if their use were related to increased lifespan on account of promoting the post-trip cessation of negative life activities (such as alcohol consumption and smoking) and the initiation or increase of positive life activities (such as better eating habits and exercise). In my experience, their responsible use leads to long-term improvements in self-care.