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Starting periods at a young age is linked to early menopause
Girls who begin menstruating before their 12th birthday may be more likely to hit the menopause before age 40, and find it more difficult to have children
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Girls who begin menstruating before their 12th birthday may be more likely to hit the menopause before age 40, and find it more difficult to have children
ÎçÒ¹¸£Àû1000¼¯ºÏy mice have been made using sperm and non-egg cells for the first time, but the technique is unlikely to work using cells derived from a man’s skin