Image of not-to-scale renderings of the skulls of various primate species
Surface Area of Tooth Roots Predicts Primate Body Size
Researchers determine that a primate’s tooth root, and not just its crown, can yield reliable information about body size, but the relationship between root surface area and diet isn’t as clear.
ABOVE: Ashley Deutsch and Adam Hartstone-Rose
Surface Area of Tooth Roots Predicts Primate Body Size
Surface Area of Tooth Roots Predicts Primate Body Size

Researchers determine that a primate’s tooth root, and not just its crown, can yield reliable information about body size, but the relationship between root surface area and diet isn’t as clear.

Researchers determine that a primate’s tooth root, and not just its crown, can yield reliable information about body size, but the relationship between root surface area and diet isn’t as clear.

ABOVE: Ashley Deutsch and Adam Hartstone-Rose

diet

Black and white photograph of Stamler looking into the camera.
“Father of Preventive Cardiology” Jeremiah Stamler Dies at 102
Lisa Winter | Feb 18, 2022
He was among the first to identify lifestyle factors that contribute to cardiovascular disease.
Illustration of gray bacteriophages approaching and infecting a red and orange bacteria that has multiple fimbria protruding from it.
Bacteria-Infecting Viruses in Gut Microbiome Linked to Cognition
Dan Robitzski | Feb 16, 2022
Research in mice and flies suggests that bacteriophages, including those found in dairy foods, may have an influence on an animals’ ability to learn and remember information.
Mummified Gut Bugs Reveal Ancient Dietary Secrets
Mummified Gut Bugs Reveal Ancient Dietary Secrets
Iris Kulbatski, PhD | Jan 10, 2022
Reconstructing the diet and microbiome of human ancestors shows an astonishingly rapid loss of microbiome diversity.
illustration of inside of human chest with highlighted gland between the lungs
Genetically Altered Mice Harness Benefits of Calorie Restriction  
Sophie Fessl | Feb 11, 2022
A study identifies a gene that appears to be partially responsible for the health effects of a limited diet.
Artist's impression of the human microbiome
Diet Implicated in Autism-Microbiome Link
Ruth Williams | Nov 11, 2021
The unbalanced gut flora present in some people with autism is not a driver of the condition but rather a consequence of eating behaviors characteristic of the condition, a new study claims.
image-2021-08-16-08-24-55-620
Could a Synthetic Probiotic Replace a Strict Diet for Patients with Phenylketonuria?
Roni Dengler, PhD | Aug 16, 2021
Synthetic biologists introduced an engineered microbe that may lead to new treatment options for phenylketonuria.
Man in a white shirt and a large backpack stands on a hill overlooking dense forest
Public Health Pioneer Peter Pharoah Dies at 87
Dan Robitzski | Nov 11, 2021
Pharoah’s work ended endemic cretinism in a remote region of Papua New Guinea and contributed to the understanding of myriad other perinatal health conditions.
salt on a black background
Salty Diet Helps Gut Bugs Fight Cancer in Mice: Study
Sophie Fessl | Sep 20, 2021
A high-salt diet suppressed the growth of tumors in a mouse model of melanoma, apparently because of an interplay between the gut microbiome and natural killer cells.
Six primates eat leaves
Umami Taste Receptor Evolved with Primates’ Diets
Abby Olena | Sep 6, 2021
A study suggests that mutations in the gene that encodes the T1R1/T1R3 taste receptor allowed primates that relied on insects for protein to transition to eating leaves and fruit.
Three researchers with headlamps on stand around a loggerhead turtle on the beach while a man covers the turtle's face with a gloved hand
Tiny Hitchhikers Reveal Turtles’ Movements and Foraging Ecology
Amanda Heidt | Jul 13, 2021
Microscopic creatures called epibionts that live on sea turtles’ shells can help researchers understand their secretive lives.
Two fingers grasp a vitamin D capsule
Vitamin D Deficiency Drives Opioid Addiction in Mice
Amanda Heidt | Jun 16, 2021
Mice with low vitamin D had exaggerated craving for opioids and felt the drugs’ effects more strongly—results supported in part by human medical records—suggesting that supplements should be explored as treatments for opioid use disorders.
Dietary Spermidine Boosts Cognition in Insects and Rodents
Ruth Williams | Apr 15, 2021
Mice and flies given the polyamine in their diet have increased brain cell metabolism and cognitive function, and epidemiological data hints at a similar benefit in humans.
gamma delta t cell intestine gut mouse mice diet nutrient epithelial cell remodeling immune system
Mysterious Immune Cells Change the Gut Lining to Accommodate Diet
Annie Melchor | Apr 6, 2021
A study shows gamma-delta T cells in mice respond to shifts in nutrients by changing the cellular composition of the intestinal epithelium.
Nutrition Researchers Can Determine What You’ve Been Eating
Amber Dance | Dec 1, 2020
The study of diet, long plagued by inaccuracies in self reports, is entering a new age of precision with the methods of metabolomics.
Infographic: Deciphering Diet from Blood and Urine Samples
Amber Dance | Dec 1, 2020
Nutrition researchers are beginning to use metabolomics to determine how healthy subjects’ diets are, and even to reveal specific properties of the foods they eat.
Space-Grown Lettuce Is Safe and Astronaut-Approved
Amy Schleunes | Mar 9, 2020
NASA’s vegetable production system, known as Veggie, may help pave the way for more sophisticated systems that could supplement astronauts’ diets during long trips to space.
Image of the Day: Poison Tolerance
Emily Makowski | Oct 3, 2019
Genetically engineered Drosophila withstand toxins common in monarch butterflies’ diet.
polyp colorectal cancer
There’s a Troubling Rise in Colorectal Cancer Among Young Adults
Katarina Zimmer | Aug 26, 2019
Some experts blame our modern, sugary diet, while others think that gut microbiome changes and sedentary lifestyles may play a role. Altogether, the causes are far from clear.
scientist to watch laura bowers
Laura Bowers Works to Sever the Link Between Obesity and Cancer
Shawna Williams | Jul 15, 2019
The Purdue University nutrition researcher delves into the details of how fat tissue affects tumors.