You may be 40 years old, but could your brain already be showing signs of accelerated aging? New research involving more than 18,000 people suggests that the answer may depend on much more than genetics or your date of birth.

when loneliness becomes persistent.

Even regular conversations and simple shared activities can provide valuable social engagement.
6. High Blood Sugar and Metabolic Problems Can Influence Cognitive Health

The brain requires a reliable energy supply to function normally.

Glucose is an important energy source, but chronically elevated blood glucose can damage blood vessels and other tissues.

People with type 2 diabetes have an increased risk of cognitive impairment and dementia.

Researchers are investigating several possible mechanisms, including vascular injury, inflammation, and altered metabolic signaling.

Insulin resistance has also attracted attention because insulin plays roles in the brain beyond its effects on