Episode Details

At 88, Mary Singer shatters the female blood donation record with her 226th giving—over 100 liters saved, helping hundreds. Since age 17, this O-negative “universal donor” has turned her daily walks and nurse friendships into a lifeline for strangers, from bleeding ulcers to newborns. Despite modern screening and snack upgrades (juice boxes over cookies), she’s only ever felt dizzy once—and still jogs. Her story? A rallying cry: donate now, because blood expires, and need never sleeps.

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