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Claim
Strong Support
mechanistic
Analysis v4

In rhesus monkeys, reducing calorie intake lowers death rates from aging and increases lifespan, showing that how diet affects aging is similar in primates and other animals with shorter lives.

19
Pro
0
Against

Mechanism

Synthesis from 1 study

How it works

Eating less food tells the body to stop growing and start cleaning up damage. This keeps cells working longer and prevents organs from breaking down too soon. The same process happens in many animals, which is why it works in monkeys and mice alike.

Most probable mechanism

In Simple Terms

When less food is eaten, the body shifts energy use away from growth and toward repairing damaged cells and clearing out harmful waste. This keeps cells healthier for longer, slows the buildup of damage that causes aging, and prevents organs from failing early.

Causal chain
1

Reduced nutrient availability lowers insulin and IGF-1 signaling in tissues

Supported by evidence
which leads to
2

Lower insulin and IGF-1 signaling increases activity of sirtuins and AMPK, which activate autophagy and DNA repair pathways

Indirect evidence only
which leads to
3

Enhanced autophagy removes damaged proteins and dysfunctional mitochondria

Indirect evidence only
which leads to
4

Reduced mitochondrial reactive oxygen species production decreases oxidative damage to cellular components

Indirect evidence only
which leads to
5

Lower accumulation of cellular damage preserves tissue function and delays organ failure

Supported by evidence

Evidence from Studies

Supporting (1)

19

Community contributions welcome

19

Caloric restriction reduces age-related and all-cause mortality in rhesus monkeys

Cohort Study
Animal
2014 Apr 1

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

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Source Study

Caloric restriction reduces age-related and all-cause mortality in rhesus monkeys

Score: 19
DOI: 10.1038/ncomms4557

Similar Assertions

Rhesus monkeys that ate 30% fewer calories than normal, starting between ages 7 and 14 and continuing for more than 20 years, died from age-related causes at 2.9 times lower rates and from any cause at 1.8 times lower rates than monkeys that ate without restriction.

19
0
90%

Rhesus monkeys fed a reduced-calorie diet lived longer than the typical lifespan of 26 years seen in monkeys fed normally at the same research center.

19
0
82%

Monkeys that eat fewer calories over many years stay more active as they age, while monkeys that eat normally become much less active over time.

16
0
81%

Rhesus monkeys in the NIA study weighed less than those in the Wisconsin study because they consumed fewer calories, and this difference in calorie intake explains why survival rates were similar between the two groups.

19
0
79%

Male grey mouse lemurs that eat 30% fewer calories starting in early adulthood live 50% longer on average and die less frequently from age-related causes compared to those eating normally.

18
0
76%