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One Dose May Do It

Promising results for Pfizer and Moderna vaccines. Single dose boosted neutralizing antibody titers 1000-fold in those previously infected. >

Alzheimer's: Insulin Resistance of the Brain

Plaques in the brain, a signature of Alzheimer's, appear related to metabolic problems involving glucose. Blame the commercial food chain. >

Early Soda Drinking Could Harm Cognitive Performance Later

Scientists were surprised to find sugary beverages harmed rat pups' mental performance. They were more surprised when they looked at why. >

Walk, Don't Saunter

Walking together makes couples healthier and happier. To get the biggest health boost, however, keep up the pace -- and don't hold hands. >

Putting Antibiotic Use on a Diet

Antibiotics are frequently overused, and bacteria have become resistant. A new set of guidelines helps doctors and patients cut back. >

Lower BP Early to Cut Stroke Risk

It's not just high blood pressure that puts Blacks at four times more risk for a stroke. Racism and economic stress contribute, too. >

Shared COVID Protection

Pregnant women respond to the COVID vaccine just as non-pregnant women do — and they transmit this protection to their newborns, too. >

Global Crop Yields Begin to Stagnate

The steady growth in agricultural productivity over the past 60 years has stalled recently. Rising temperatures appear to be responsible. >

Popeye Was Right

Greens give you the nitrates you need to stay strong, particularly after about the age of 45, when poor muscle function can lead to falls. >

Steroids: Building Muscle, Depleting the Brain

The anabolic steroids athletes take to build muscle mass have the opposite effect on the brain -- they make it age faster. >

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