Skip to Content

Photo Essay: Hungry Monkeys

Monkeys on an extremely low-calorie diet are healthier–and hungrier.

Scientists know that rats fed a nutritionally adequate diet of 30 ­percent fewer calories than normal tend to live 30 percent longer. Similar effects have been observed in organisms from yeast to fruit flies but not, as yet, in primates. At the University of Wisconsin, researchers led by ­Richard ­Weindruch have been testing a calorie-restricted diet in a group of rhesus monkeys since 1989. Though it’s too early to make strong claims about the effects of calorie-restriction on these animals, the preliminary results suggest that the dieting monkeys are healthier as they enter old age.

This monkey is part of a control group and a bit over 26. (Credit: Kevin Miyazaki/Redux)

Click here for the photo essay.

Keep Reading

Most Popular

This startup wants to copy you into an embryo for organ harvesting

With plans to create realistic synthetic embryos, grown in jars, Renewal Bio is on a journey to the horizon of science and ethics.

VR is as good as psychedelics at helping people reach transcendence

On key metrics, a VR experience elicited a response indistinguishable from subjects who took medium doses of LSD or magic mushrooms.

This nanoparticle could be the key to a universal covid vaccine

Ending the covid pandemic might well require a vaccine that protects against any new strains. Researchers may have found a strategy that will work.

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.