> do not go somewhere and get your blood replaced with saline
I just did that this morning when I donated blood. They said they needed the plasma badly, so they took the red blood cells and the plasma, and returned a saline solution.
So maybe you just need to donate blood/plasma often to stay young?
Unfortunately they don't give any details on what constitutes more frequent and less frequent. For example once a month vs once a year or once very 2 weeks vs once every 2 years, etc.
Whole blood donation generally is only allowed every 8 weeks. Double-red blood cell donation is allowed every 16 weeks up to a maximum amount per 12-month period. I believe Plasma can be safely donated every 4 weeks. Doesn't tell you specifics about the study, but know there are different kinds of blood donation and different frequencies that are permitted for each.
I think it's common for regular donors to donate almost as often as is recommended.
I just did that this morning when I donated blood. They said they needed the plasma badly, so they took the red blood cells and the plasma, and returned a saline solution.
So maybe you just need to donate blood/plasma often to stay young?