This Is How Much Sleep You Need to Lower Your Type 2 Diabetes Risk
By Mandy French, Mar 3, 2026
“What a great study, and so good to see further evidence that the myth of 8 hours of sleep is too much. This supports a prior studyTrusted Source between the U.K. and China, which also showed 7 hours to be optimal for mental health and cognitive performance,” said Alex Dimitriu, MD, double board certified in Psychiatry and Sleep Medicine and founder of Menlo Park Psychiatry & Sleep Medicine, who was not involved in the study. “In the end, our lives exist on a spectrum between sleep and wake — too much sleep is often linked to illness and depression, while too little sleep is linked to anxiety and insomnia. Our autonomic nervous system sets this balance, and here we see additional support for an optimal balance — around 7 hours of sleep.”
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