Researchers from the Federal University of Pelotas (Brazil), New York University, and the U.S. National Institute on Aging found that weight gain is linked to having fewer teeth and to loss of bone and gum tissue.
They followed more than 900 participants in a health-study project in Pittsburgh, Pennsylvania, and Memphis, Tennessee.
At the start of the project, volunteers underwent oral exams, during which the researchers recorded missing teeth and gum disease.
Over four years of follow-up, abou…

The weight of his achievements grew heavier after a severe, incurable disease distorted his body and took his speech — but it never defeated the brilliant mind that made him a legend.
Stephen Hawking’s key discoveries
Ranked 25th on the BBC list of the “100 Greatest Britons,” he was credited with developing theories about the origin of the universe and with popularizing the idea that advanced aliens might hide their existence to avoid more powerful civilizations. But Hawking’s main field was the…

Coffee lovers know there’s a big difference between a drink’s aroma and its taste: despite a rich, pleasant smell, the first sip often leaves a lingering bitterness. That difference comes from taste receptors on the tongue. Until now, though, scientists didn’t know exactly how those receptors respond to the bitter compounds in coffee. Researchers at the University of North Carolina at Chapel Hill have described it for the first time using high-resolution molecular images — and their results coul…

Pyrocystis lunula — an organism known for brief flashes of blue light — can sometimes produce literal sparks in breaking waves on the shore. Researchers at the University of Colorado Boulder recreated that effect in the lab and managed to keep the glow going.
Julia Bracci, who ran the experiments in a darkened lab, said the team first tried to make the algae glow by applying mechanical pressure to mimic wave force. “We tried slowly compressing them,” she recalls. “But they didn’t respond much.”…

GLP-1 drugs such as Ozempic, Wegovy, and Mounjaro have exploded in popularity in the U.K. and the U.S. About 12% of U.S. adults (roughly 41 million people) and about 1.6 million adults in the U.K. have taken medications for weight loss.
A Cleveland Clinic study of 460,000 adults found that nearly 1 in 5 patients who were prescribed them developed nutrient deficiencies within a year — often without obvious symptoms.
Another large Mexican study of 480,000 patients found that 13.6% had a significa…

Our voices can change in an instant: an adrenaline rush tightens the muscles around the larynx, making the voice higher and shakier, while talking with someone close tends to make the voice softer and deeper. When someone lies, rhythm and intonation shift — and oddly, we notice those shifts more accurately when we only hear the person than when we also see them.
What your voice reveals about you
Our voice carries a huge amount of information in every sentence, and people are remarkably good at …