"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." While vitamin B12 might not be as buzzy as calcium or an immediately recognizable household name like ...

In a study published today in Science, researchers say they have solved a climate enigma — the inexplicable surge in global temperature in 2023, rising faster than climate models predicted. By ...

Normal thyroid-stimulating hormone (TSH) levels generally fall between 0.5 and 5.0 milliunits per liter (mU/L). If your TSH level is higher than 5.0 mU/L it suggests an underactive thyroid, or ...

“Normal” levels of vitamin B12 may not be enough to ward off dementia, new research finds. Researchers at the University of California San Francisco studied 231 healthy older adults (averaging 71 ...

Fluoride exposure appears to slightly decrease IQ scores in children, a new federal meta-analysis has concluded -- but not at the low levels recommended for U.S. drinking water. Fluoride in drinking ...

An upper level low is low pressure that starts higher up in the atmosphere. Imagine you're in a 10 story building and low pressure typically starts on the 5th floor. In the case of an upper level low, ...

In older adults, low sodium often results from certain medications, kidney issues, or infections. Because multiple factors may contribute, treatment depends on identifying the underlying cause. Sodium ...