weight to donate blood
When you donate, youâll be losing a pint of blood, which weighs about a pound. However, donât expect to notice any difference in the way your clothes fit. Your weight will quickly rebound as you drink the fluids recommended following a donation and nibble on a snack to keep you feeling well.f youâve recently lost a lot of weight or youâre just naturally thin, you may not be eligible to donate blood. The American Red Cross requires donors to weigh at least 110 pounds. It notes that additional weight requirements apply to donors age 18 and younger and to all high school donors.