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

individual aging affects covid outcomes concept
individual aging affects covid outcomes concept

Anti-aging drugs are being tested as a way to treat covid

Drugs that rejuvenate our immune systems and make us biologically younger could help protect us from the disease’s worst effects.

close up of baby with a bottle
close up of baby with a bottle

The baby formula shortage has birthed a shady online marketplace

Desperate parents just want to feed their babies. They’re having to contend with misinformation, price gouging, and scams along the way.

"Olive Garden" NFTs concept
"Olive Garden" NFTs concept

I tried to buy an Olive Garden NFT. All I got was heartburn.

Our newest issue spells out what you need to know about the dizzying world of digital money.

Stay connected

Illustration by Rose WongIllustration 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.