Scientists Discover How Subcutaneous Fat Protects Women From Brain Inflammation

Researchers from Augusta University have uncovered a surprising protective effect of subcutaneous fat — the type of fat stored just under the skin. According to a study published in the journal Diabetes, this fat may help shield women from brain inflammation.

Men and Women Store Fat Differently

Men are more likely to accumulate visceral fat, which forms around major abdominal organs. This type of fat is known to raise inflammation levels throughout the body and is linked to a higher risk of metabolic disorders.

Women with obesity also gain weight, but they generally carry more subcutaneous fat and significantly less visceral fat than men. Because subcutaneous fat is less inflammatory, this difference may offer certain protective effects — particularly for the brain.

What Scientists Observed in Their Study

The researchers examined how male and female mice responded to a high-fat diet. Interestingly, female mice did not show signs of brain inflammation or insulin resistance during weight gain — at least not until they reached a menopausal stage.

Around 48 weeks of age, the female mice began to store more visceral fat. Despite this shift, their estrogen and other sex hormone levels remained unchanged. This finding suggests that estrogen alone may not be responsible for protecting the brain.

A New Possible Explanation

Because the protective effect disappeared when visceral fat levels increased, the scientists believe that it may actually be the low amount of visceral fat — combined with higher subcutaneous fat — that shields the brain from inflammation.

This discovery offers a new perspective on how fat distribution affects metabolic health and why women and men experience different risks related to obesity.