The Health, Labor and Welfare Ministry is reviewing the minimum age for blood donors to make it possible for 16-year-olds and 17-year-olds to donate 400 ml — the same amount as donors above 18.

Under current health ministry guidelines, people under 18 can donate only 200 ml of blood at a time. But the smaller amounts raise the risk of patients contracting fever and rashes due to blood-mixing, health officials say.

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