The Claim

Supplementation with serine at 5 mM extends the median lifespan of Caenorhabditis elegans by 20.8% through a mechanism dependent on the methionine cycle enzymes metr-1 and sams-1, which are also required for glycine-mediated lifespan extension, indicating conserved longevity mechanisms via one-carbon metabolism.

Source: Glycine promotes longevity in Caenorhabditis elegans in a methionine cycle-dependent fashion

What the research says

Supports is higher

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

Supports
14score
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.

How it works
1 study reviewed
In plain English

Adding serine at a concentration of 5 mM increases the average lifespan of the nematode Caenorhabditis elegans by 20.8%, and this effect requires the same enzymes involved in glycine’s lifespan extension, suggesting both amino acids act through a shared metabolic pathway related to one-carbon metabolism.

See the scientific wording

Supplementation with serine at 5 mM extends the median lifespan of Caenorhabditis elegans by 20.8%, and this effect is dependent on the same methionine cycle enzymes (metr-1 and sams-1) as glycine, indicating conserved longevity mechanisms through one-carbon metabolism.

Why this might work

Serine and glycine are used by the body to produce a molecule called SAM, which adds methyl groups to DNA-packaging proteins, turning off genes that promote growth and development. This shutdown of growth-related activity slows aging and makes the organism live longer.

Verified mechanismbased on 1 study

What the research says

1 study

  1. Study: Glycine promotes longevity in Caenorhabditis elegans in a methionine cycle-dependent fashion

    Scientists found that giving serine to tiny worms makes them live longer, just like glycine does—and both only work if certain enzymes in the worms’ metabolism are working. So yes, serine helps worms live longer in the same way glycine does.

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

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