Men’s Brains Shrink Faster, but Women Face Greater Alzheimer’s Risk

Boys Go To Jupiter: Scientists have long known that women are almost twice as likely as men to develop Alzheimer’s. For years, the thinking was that women’s brains simply aged faster. But new research from the University of Oslo is turning that idea on its head.

The Study: Researchers reviewed more than 12,000 MRI scans from about 4,700 adults and found that men’s brains actually shrink more quickly in regions tied to memory and sensory processing. Women’s brains, on the other hand, lose volume more slowly, yet they’re still more prone to Alzheimer’s. The findings suggest that hormonal changes after menopause or genetic factors might make women’s brains more vulnerable as they age.

The Takeaway: Even though biology plays a role, the habits that protect your brain are the same for everyone. Moving your body regularly, eating whole foods, and getting enough sleep all help keep the mind sharp. Staying socially connected and mentally engaged also go a long way in supporting long-term brain health (Don’t have a group? Try starting your own).

Keep in Mind: A smaller brain doesn’t mean a weaker one. Shrinkage happens naturally with age, but what matters most is how well your brain continues to function. Healthy routines can help it stay strong for years to come.