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Do blood transfusions slow aging? The science behind the 'fountain of youth'

In 2019, the U.S. Food and Drug Administration (FDA) issued a public warning that infusions of young donor plasma have not been proven safe or effective for treating aging, memory loss, or dementia. This caution came in response to companies touting unproven, expensive treatments and directly addresses the question: do blood transfusions slow aging?. Despite the hype, the evidence for clear anti-aging benefits in humans remains limited and preliminary.