There are many misconceptions about blood donation. Below we address some of the most common myths with clear facts.
Myth: Donating blood is dangerous or will make me weak.
Fact: Donating a unit of blood is a safe, well-monitored procedure. The volume removed is replaced by your body within hours (plasma) to weeks (red cells). Donors are screened and monitored during donation.
Myth: I can't donate if I've ever had a certain illness.
Fact: Eligibility depends on the illness, treatment, and timing. Many past conditions do not permanently prevent donation. Centers assess risk during screening.
Myth: You can catch infections from donating blood.
Fact: Donation uses sterile, single-use equipment. The risk of infection from the donation process itself is effectively zero.
Myth: I should avoid donating if I'm on medication.
Fact: Some medications require temporary deferral, but many do not. Always disclose medications during screening so staff can advise.
If you're unsure about eligibility, use our Eligibility Quick Check and confirm with your local blood center.
Remember that policies vary between countries and even between centers. When in doubt, check the official guidance from your national blood service — they publish clear lists of temporary and permanent deferrals. Accurate screening keeps donors and recipients safe.
If a myth makes you hesitant, ask staff — many concerns are resolved with a quick conversation and a factual explanation.