Dementia cases to double by 2050. Here's why

Key Points:

• The annual number of new dementia cases worldwide is projected to more than double from 11.4 million in 2023 to 24.7 million by 2050, driven largely by an aging global population.
• Women face a higher incidence of dementia than men, with 10.6 new cases per 1,000 people compared to 8.6 in men, potentially due to factors like Alzheimer's prevalence, hormonal changes, and metabolic health.
• Low- and middle-income countries experience significantly higher rates of new dementia cases (13.6 per 1,000) than high-income countries (8.3 per 1,000), raising concerns about their capacity to provide adequate prevention, diagnosis, and care.
• Nearly half of dementia cases are linked to 14 modifiable risk factors such as physical inactivity, obesity, high blood pressure, diabetes, smoking, and social isolation, highlighting the importance of prevention efforts.
• Experts emphasize the urgent need for health systems to proactively address dementia risk and improve care infrastructure, warning that the growing epidemic demands immediate attention rather than delayed response.