>It is frequency-dependently associated with longevity.

Paper where more frequent cycles in women correlate to longer lifetimes? That would have to be true if this were true.

I'm assuming you're referring to blood loss from menstruation? That's typically only 30-40 mL (1-1.5 fluid ounces, about a shot glass).

Nowhere close to the amount given during a donation.

Heavy bleeders would be in the 100-200ml range. This group should correlate with longevity.