I’m a woman aged between 18 and 25. Can I only donate blood once a year?

For women aged 18 to 25, we recommend only one donation per year. This is because blood donor studies have shown that young women have a particularly high risk of developing iron deficiency.

During a single donation, women lose as much as 60–100% of the iron contained in their iron reserves. The reserves are replenished slowly, and the purpose of this recommendation is to promote the replenishment of donors’ iron reserves.