Blood donation is a noble act. Try donating blood voluntarily and frequently as it can save many lives. Know how to donate blood with this infographic.

On World Blood Donor Day, Dr. Sangeeta Pathak answers key questions about eligibility, safety, and precautions around blood donation, especially for women and first-time donors.

Blood type U.S. prevalence Compatibility; O+ O-39% 9%: People with type O blood can donate to all blood types, but they can only receive donations of type O blood.

Blood donation doesn't usually take longer than 8 to 10 minutes, but the whole process which involves signing paperwork and getting a health checkup beforehand can take up to an 1 hour.

The U.S. Food and Drug Administration’s new blood-donation guidelines recommend all potential donors be asked the same risk-based questions, regardless of sexual orientation, gender or sex.