The Claim

Dietary supplementation with 8% glycine for 12–24 months in genetically heterogeneous mice is associated with a 4%–6% increase in median lifespan and a 6% increase in maximum lifespan in males, and a 2% increase in maximum lifespan in females, with consistent effects observed across three independent research sites.

Source: Glycine supplementation extends lifespan of male and female mice

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
16score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

In genetically heterogeneous mice, feeding a diet containing 8% glycine for 12 to 24 months is associated with a 4% to 6% longer median lifespan and a 6% longer maximum lifespan in males, and a 2% longer maximum lifespan in females, with consistent results across three separate research laboratories.

See the scientific wording

Supplementing the diet with 8% glycine for 12–24 months in genetically heterogeneous mice is associated with a 4%–6% increase in median lifespan and a 6% increase in maximum lifespan in males, and a 2% increase in maximum lifespan in females, with consistent effects across three independent research sites, suggesting dietary glycine may modestly extend healthy aging in mice.

Why this might work

Extra glycine in the blood enters lung and liver cells called macrophages, where it opens special channels that let chloride ions flow in. This makes the macrophages less active and stops them from triggering inflammation. With less inflammation in the lungs, cancer tumors are less likely to start or grow, allowing mice to live longer.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: Glycine supplementation extends lifespan of male and female mice

    Scientists gave mice extra glycine in their food for two years and found that the mice lived a little longer, especially the males. The effect was seen in three different labs, making it very reliable.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.