A member asked:

Will i gain weight if i donate blood?

8 doctors weighed in across 3 answers

Only...: Only if you eat more and/or exercise less after doing it.

Answered 10/20/2013

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Depends...: ...On how good the donor center's cookies are, and how many you eat.

Answered 10/20/2013

4.8k views

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Dr. Donald Alves answered

Specializes in Emergency Medicine

No: Only if you eat too much after donating. You actually lose one pound (~1/2 kg) from leaving the unit of whole blood behind at the donor center.

Answered 3/29/2014

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