The Claim

In male mice undergoing 40% calorie restriction, the degree of saturation of dietary fatty acids is associated with lifespan, where higher saturation (such as in lard) is linked to greater longevity compared to less saturated fats like soybean or fish oils.

Source: The Impact of Aging, Calorie Restriction and Dietary Fat on Autophagy Markers and Mitochondrial Ultrastructure and Dynamics in Mouse Skeletal Muscle.

What the research says

Supports is higher

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

Supports
8score
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 male mice eating 40% fewer calories, the type of fat they eat matters — mice live longer on more saturated fats like lard than on unsaturated fats like soybean or fish oil.

See the scientific wording

Dietary fatty acid saturation degree is associated with lifespan extension in male mice on 40% calorie restriction, with higher saturation (as in lard) linked to greater longevity compared to unsaturated fats like soybean or fish oils.

What the research says

1 study

  1. Study: The Impact of Aging, Calorie Restriction and Dietary Fat on Autophagy Markers and Mitochondrial Ultrastructure and Dynamics in Mouse Skeletal Muscle.

    The study found that male mice on a very low-calorie diet lived longer when they ate more saturated fat (like lard) compared to unsaturated fats (like in soybean or fish oil), which supports the claim.

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.