This high-sugar fruit may actually lower diabetes risk

Mangos, often dismissed as too sugary, may hold hidden benefits for those at risk of diabetes. A George Mason University study found that daily mango eaters showed better blood sugar control and less body fat than those eating a lower-sugar snack. The results suggest that it’s not just sugar levels, but how the sugar is packaged in whole foods, that matters.

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The hidden group that loses COVID protection fast

Why do some people stay protected after vaccination while others quickly lose immunity? Researchers in Japan tracked over 2,500 people for 18 months and found four distinct immune response patterns. The so-called “rapid-decliners” looked strong at first but lost antibodies quickly, leaving them more vulnerable to infection.

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Genetic variations linked to oxygen drops during sleep

Researchers have identified 57 genetic variations of a gene strongly associated with declines in blood oxygen levels during sleep. Low oxygen levels during sleep are a clinical indicator of the severity of sleep apnea, a disorder that increases the risk of heart disease, dementia, and death.

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More electronic device use tied to more sugar and caffeine in teens

A new study found that more than 27% of teens exceed recommended sugar intake and 21% exceed recommended caffeine from soda and energy drinks. Males consumed more sodas and energy drinks than females, and youth in grade 8 consumed more than those in grade 10.

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The night gardeners: Immune cells rewire, repair brain while we sleep

Science tells us that a lot of good things happen in our brains while we sleep — learning and memories are consolidated and waste is removed, among other things. New research shows for the first time that important immune cells called microglia — which play an important role in reorganizing the connections between nerve cells, fighting infections, and repairing damage — are also primarily active while we sleep.

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A new discovery: How our memories stabilize while we sleep

Scientists have shown that delta waves emitted while we sleep are not generalized periods of silence during which the cortex rests, as has been described for decades in the scientific literature. Instead, they isolate assemblies of neurons that play an essential role in long-term memory formation.

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Did early mammals turn to night life to protect their sperm?

Humans are diurnal — we are active in the day and sleep at night. But diurnalism is by far the exception rather the rule in mammals. About 250-230 million years ago, the mammalian ancestors, called the therapsids, became exclusively nocturnal, and stayed so until the demise of the dinosaurs 66 million years ago.

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