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Longevity Diet Helps Mice Live Longer and Healthier Lives

Published on July 10, 2026, 12:34 p.m.
Longevity Diet Helps Mice Live Longer and Healthier Lives

Topic: Health

Scientists at USC found a diet that helped mice live longer and healthier. The diet was low in protein and had balanced levels of an amino acid called methionine, found in foods like eggs and meat. This diet improved healthspan, reduced body fat, and lowered frailty in older mice.

A team of scientists from the University of Southern California (USC) has discovered a longevity diet that helped mice live longer and healthier lives. The diet was mostly plant-based with fish, low in protein, and had carefully balanced levels of methionine, an amino acid found in foods like eggs, meat, and dairy.

The researchers fed 20-month-old mice one of four diets: a standard diet, a Western diet high in fats and sugars, a low-carbohydrate ketogenic diet, or a low-protein, methionine-supplemented longevity diet (LDMM). The mice on the LDMM performed best, experiencing a longer healthspan, carrying less body fat, and showing fewer signs of frailty than those on other diets.

The researchers also analyzed data from over 200,000 people and found that those who followed more plant-focused eating patterns had lower rates of obesity and Type 2 diabetes. This suggests that a Mediterranean-inspired diet centered on mostly vegan or vegetarian foods with fish may offer important health benefits.

Why It Matters

This study can help us understand how to live longer, healthier lives by making informed food choices. It's especially relevant for Indians who are increasingly adopting Western diets and facing rising rates of obesity and diabetes.

Key Facts

  • The longevity diet was developed by Valter Longo and his team at USC.
  • The diet is mostly plant-based with fish, low in protein, and has balanced levels of methionine.
  • Mice on the LDMM diet experienced a longer healthspan, reduced body fat, and lowered frailty.
  • Over 200,000 people were analyzed to see if similar benefits apply to humans.
  • The study suggests that a Mediterranean-inspired diet may offer important health benefits.

Key Terms

methionine
An amino acid found in foods like eggs and meat, essential for growth and maintenance of the body.
healthspan
The portion of life spent in good health, free from disease and disability.

Implications

This study can help us understand how to live longer, healthier lives by making informed food choices. It's especially relevant for Indians who are increasingly adopting Western diets and facing rising rates of obesity and diabetes.


Source: https://www.sciencedaily.com/releases/2026/07/260708022206.htm

Journal Reference:

  1. Maura Fanti, Sebastian Brandhorst, Gerardo Navarrete, Arnold Diaz, Giacomo Giuliani, Dolly Chowdhury, Gabriel C. Antunes, Todd E. Morgan, Louis Dubeau, Valentina Villani, Laura Perin, Vasanti S. Malik, Frank B. Hu, Valter D. Longo. Methionine-supplemented longevity diet increases growth hormone, GLP-1, and FGF21; reduces frailty; and promotes healthspan. Cell Metabolism, 2026; DOI: 10.1016/j.cmet.2026.05.015

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