Women’s Brains May Be More Vulnerable to Dementia Risk Factors Than Scientists Realized

Key Points:

• A UC San Diego study analyzing over 17,000 adults found that common dementia risk factors not only occur more frequently in women but also have a stronger negative impact on their cognitive health compared to men.
• Women showed higher rates of depression, physical inactivity, and sleep problems, while men had higher prevalence of hearing loss, diabetes, and heavy alcohol use; however, some conditions like hypertension and higher BMI had a greater cognitive impact on women.
• Hearing loss and diabetes, though more common in men, were linked to poorer cognitive performance in women, highlighting that the same risk factor may affect sexes differently in dementia risk.
• The findings emphasize the need for sex-specific approaches in dementia prevention, suggesting interventions targeting depression, physical activity, and cardiovascular health could be particularly beneficial for women.
• Researchers call for further studies to understand underlying causes of these sex differences, including hormonal, genetic, and healthcare access factors, to develop more precise and effective dementia treatments.