Blood hormone restores youthful hearts to old mice

Nature – Researchers have identified a blood hormone that makes ageing hearts in mice look young again. The authors of the study say their finding offers therapeutic potential for the treatment of age-related heart disease, an increasingly common cause of heart failure. The protein, known as growth differentiation factor 11 (GDF11), circulates at high levels in the blood of young mice but declines with age. In a study published this week in Cell, the researchers report that elderly mice treated with the protein experience a reversal of tissue ageing in the heart. Rad article

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