A claim you hear on longevity podcasts

Does calorie restriction turn down inflammation genes?

The claim checked: Eating 30% less food changes genes, turning down those involved in inflammation Hear it at 1:44

What do the studies say?

Not enough evidence

Eight of nine monkey studies, most at about 30% fewer calories, found changes in gene expression or related markers; one found only modest changes in reproductive tissue.

None of these studies counts toward the badge yet. This point is about animals. Only human studies count toward a badge. 1 more study is waiting for a full read and does not count yet.

What was said on the podcast?

“we know that eating 30% less food has change changes your genes it decreases genes that are involved in inflammation it decreases the expression of genes that are involved in oxidative stress it increases the inspr of neurotrophic factors”
Rhonda Patrick, FoundMyFitness · How Your Lifestyle Can Change Your Genetics (2010) · 1:44 on YouTube
Comes up in 5 episodes of the show.
Point 1 of 2 Not enough evidence

30% less food, lifelong (monkey evidence), changes gene expression

Agree 8

other primary study · 2001

Not counted. An animal or lab study.

“The effects of CR on gene expression profiles are striking, with a strong increase in the expression of structural and cytoskeletal genes and a reduction in the expression of mitochondria-related genes.”

Influences of aging and caloric restriction on the transcriptional profile of skeletal muscle from rhesus monkeys. Proc Natl Acad Sci U S A
Who: 12 male rhesus monkeys; CR comparison used 6 middle-aged (19-21 y) monkeys, 3 calorie-restricted vs 3 controls
PMID 11309484

other primary study · 2018

Not counted. An animal or lab study.

“Downregulated pathways largely included immune and inflammation pathways, while upregulated pathways included the ribosome, branched chain amino acid (BCAA) degradation, oxidative phosphorylation, peroxisome, fatty acid degradation, RNA transport and the spliceosome (Fig.1E).”

Caloric Restriction Engages Hepatic RNA Processing Mechanisms in Rhesus Monkeys. Cell Metab
Who: 11 adult male rhesus monkeys aged 9 ± 3 years (5 control, 6 calorie-restricted) from the Wisconsin CR and Aging study
PMID 29514073

other primary study · 2009

Not counted. An animal or lab study.

“A total of 241 genes were identified as significantly differentially expressed with CR from 10,163 probes with a satisfactory quality of signals over all the array slides.”

Modulation of skeletal muscle insulin signaling with chronic caloric restriction in cynomolgus monkeys. Diabetes
Who: 32 feral adult male cynomolgus monkeys (mean age 8.2 y) randomized to ad libitum or 30% calorie restriction
PMID 19336678

Show 5 more Show fewer

other primary study · 2025

Not counted. An animal or lab study.

“Signature positive enrichment of ribosomal, spliceosome, and RNA degradation pathways with CR was aligned between species, as were the negative enrichments in immune, inflammatory, and growth pathways.”

Caloric Restriction Reprograms Adipose Tissues in Rhesus Monkeys. Aging Cell
Who: age-matched (~25 years) adult male rhesus monkeys from the Wisconsin National Primate Research Center Aging and Caloric Restriction study; subcutaneous and visceral fat at necropsy; compared with human CALERIE fat transcriptomes
PMID 41042069

other primary study · 2026

Not counted. An animal or lab study.

“In contrast, differential gene expression analysis between CR and control revealed 1046 differentially expressed genes (DEG) across all glial cell types.”

Calorie Restriction Attenuates Transcriptional Aging Signatures in White Matter Oligodendrocytes and Immune Cells of the Monkey Brain. Aging Cell
Who: aged rhesus monkeys (22-37 years) from the NIA long-term calorie restriction study; corpus callosum white matter glia
PMID 41283828

other primary study · 2026

Not counted. An animal or lab study.

“Withing the Reactome collection, 149 pathways were significantly enriched (FDR-adjusted p-value < 0.05); with 16 pathways upregulated and 133 downregulated in CR (Table S3).”

Caloric restriction reprograms skeletal muscle molecular pathways in non-human primates: potential relevance to human aging biology. Skelet Muscle
Who: male and female rhesus monkeys aged 20-42 (mean 30.1) from the NIA long-term calorie restriction study; vastus lateralis muscle collected at death
PMID 42104473

other primary study · 2017 · landmark

Not counted. An animal or lab study.

“For 18 CR monkeys, the average chronologic age was 27 years while the predicted methylation age was 20 years ( p = 0.003, paired t -test).”

Caloric restriction delays age-related methylation drift. Nat Commun
Who: rhesus macaques on 30% CR from middle age (7-14 y) analysed at 22-30 y, plus mice on 40% CR and human blood samples for cross-species comparison
PMID 28912502

other primary study · 2017

Not counted. An animal or lab study.

“Twenty‐four distinct known miRNAs from 18 different miRNA gene families were significantly differentially expressed between control and CR monkeys (Table 1 ).”

Caloric restriction impacts plasma microRNAs in rhesus monkeys. Aging Cell
Who: male rhesus monkeys aged ~25 years on control or calorie-restricted diets
PMID 28677323

Partly agree 1

other primary study · 2010

Not counted. An animal or lab study.

“Overall, the data suggest that moderate CR has no obvious lasting negative impact on the reproductive neuroendocrine axis and has only a modest influence on pituitary and testicular gene expression.”

Impact of Moderate Calorie Restriction on the Reproductive Neuroendocrine Axis of Male Rhesus Macaques. Open Longev Sci
Who: 10 male rhesus macaques, 30% CR started at ~4 years (peripubertal) vs controls
PMID 20814446

Disagree 0

None.

Point 2 of 2 Leaning for

It turns down genes involved in inflammation

All three studies found calorie restriction turned down inflammation genes in humans, though two of them tested much milder restriction than 30%.

Computed from 3 studies that test this point, each judged by two readers, in full. 3 more studies are waiting for a full read and do not count yet.

Agree 3

other primary study · 2022 · landmark

“These data indicate that CR in humans elicits anti-inflammatory pathways that may improve adipose tissue metabolism.”

Caloric restriction in humans reveals immunometabolic regulators of health span. Science
Who: healthy middle-aged non-obese volunteers in the CALERIE-II calorie restriction trial (adipose biopsy subset), with mechanistic follow-up in Pla2g7 knockout mice
PMID 35143297

controlled trial · 2023 · landmark

“Inflammation, together with KRAS signaling, were significantly downregulated in CR compared to AL (Figure 3 ).”

Calorie restriction modulates the transcription of genes related to stress response and longevity in human muscle: The CALERIE study. Aging Cell
Who: Healthy non-obese adults (mean age ~38-40) in the CALERIE 2 randomized trial who consented to vastus lateralis muscle biopsies
PMID 37823711

other primary study · 2013

“Transcriptional profiling also indicates a CR-induced decrease in the inflammatory response, which is implicated in a range of age-related diseases.”

Calorie restriction in humans inhibits the PI3K/AKT pathway and induces a younger transcription profile. Aging Cell
Who: 15 lean middle-aged Calorie Restriction Society members (mean 58.7 y) vs 10 age-matched Western-diet controls and 5 younger controls; plus male Fisher 344 rats
PMID 23601134

Partly agree 0

None.

Disagree 0

None.

What else was said but not tested?

  • It turns down genes involved in oxidative stress
  • It turns up neurotrophic factors

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