Do women hit a biological ‘cliff’ at menopause?

illuminem summarises for you the essential news of the day, reviewed by our editorial team. Read the full piece on Scientific American or enjoy below:

🗞️ Driving the news: A new study published in Nature Medicine has found that women experience sudden “jumps” in several health markers at the onset of menopause, challenging the view that its physiological effects unfold gradually
• Researchers analysed health data from more than one million women in the US and Israel, identifying abrupt shifts in bone density, liver health, kidney function and other markers

🔭 The context: Menopause occurs when the ovaries stop releasing eggs and oestrogen production falls, yet its biological consequences beyond reproduction remain poorly understood
• The research, led by Uri Alon of the Weizmann Institute of Science in Rehovot, Israel, used a population-wide analysis averaging hundreds of millions of health tests
• Some shifts were harmful, such as a move towards bone loss, while others were positive, including higher iron and haemoglobin levels, likely because monthly bleeding stops
• When the team ran the same analysis on men of a similar age distribution, they found no comparable jumps, and records from both countries showed similar patterns

🌍 Why it matters for the planet: Understanding women’s health across the life course is essential to building healthier and more equitable societies, particularly as populations age
• The findings point to long-standing gaps in women’s health research, which shape how health systems design preventive care and allocate resources

⏭️ What’s next: Women on hormone therapy tended to see smaller jumps in some tests, especially for bone, liver and kidney, suggesting some may benefit from starting treatment earlier, before menopause
• Further research is needed to establish why these jumps occur and how hormone therapy might help

💬 One quote: “It’s an abrupt, body-wide transition across bone, liver, kidney, blood chemistry, fats, and more,” said Uri Alon, the study’s senior author and a professor at the Weizmann Institute of Science.

📈 One stat: More than 1 million women — the number of women in the US and Israel whose health data were analysed in the study

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