The Claim

In male C57BL/6 mice subjected to graded calorie restriction, increased hypothalamic expression of Npy, Agrp, Per1, Per2, and Cry1 is significantly associated with reduced body temperature.

Source: The effects of graded levels of calorie restriction: VI. Impact of short-term graded calorie restriction on transcriptomic responses of the hypothalamic hunger and circadian signaling pathways

What the research says

Supports is higher

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

Supports
19score
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 C57BL/6 mice undergoing reduced food intake, higher activity levels of the genes Npy, Agrp, Per1, Per2, and Cry1 in the hypothalamus occur alongside lower body temperature.

See the scientific wording

In male C57BL/6 mice under graded calorie restriction, hypothalamic expression of Npy, Agrp, Per1, Per2, and Cry1 is significantly associated with reduced body temperature, suggesting that these genes are linked to adaptive thermoregulatory responses to energy scarcity.

Why this might work

When food intake drops, the brain detects lower energy signals and turns up genes that make the animal hungrier and reset its internal clock. These changes cause the body to reduce heat production and lower its temperature to save energy, with one key gene, NPY, directly shutting down heat-generating processes in fat and muscle tissue.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: The effects of graded levels of calorie restriction: VI. Impact of short-term graded calorie restriction on transcriptomic responses of the hypothalamic hunger and circadian signaling pathways

    When male mice eat less food, their brains turn up genes that make them hungrier and mess with their body clock—and at the same time, their body temperature drops. The study shows these two things happen together, suggesting the genes help the body save energy by getting cooler.

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

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