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Almost one in three men have weak bones and are at risk of osteoporosis

Osteoporosis is typically thought of as a concern for post-menopausal women.

But according to a small new study, a surprisingly high number of young and middle-aged men are at risk of developing the condition, according to Daily Mail.

Scientists say that nearly one in three men between ages 35 and 50 have osteopenia, a condition that causes weak bones and is a precursor to osteoporosis.

The team, from the University of Mississippi, says the findings show that doctors need to be scanning and monitoring adults from a younger age as well as for more education and awareness in children of their risk.

Fractures, particularly of the hip, can have serious consequences. Complications of a hip fracture lead to permanent disability rates of 50 percent.

The genes that make us human

Scientists have identified a slew of genes that may have played a key role in the emergence of our species.

A study using a new computational method to predict motif sequences, or particular patterns in DNA relating to gene activity, has found that genes previously thought to play similar roles across many organisms are actually unique to humans.

Researchers say the findings could help to explain some of the major differences between humans and chimps, our closest living relatives, by accounting for the expression of hundreds of different genes, according to Daily Mail.

Sleeping for nine hours a night could be as bad for your memory

Sleeping for nine hours a night could be as bad for your memory as only getting five.

It is well known that people who sleep fewer than five hours a night can expect memory problems. But a study found the same effects in those who get a healthy-sounding nine hours a night, according to Daily Mail.

Researchers looked at memory test results for almost 400,000 people who were asked to match six pairs of hidden cards after memorising their positions.

Compared to people getting seven hours of sleep, those who reported sleeping for nine hours made the same number of errors as people sleeping five or less.

Is the Saturated Fat in Chocolate as Bad as the Fat in Meat?

The fat in chocolate is not as harmful as the fat in meat. It comes from cocoa butter and is made of equal parts of oleic acid, a heart healthy monounsaturated fat found in olive oil, and stearic and palmitic acids. Stearic and palmitic acids are forms of saturated fat, which has been linked to heart disease, but stearic acid does not raise cholesterol, and palmitic fat makes up only a third of the fat in chocolate. (Beef has proportionately more palmitic fat.)

The cocoa bean is also rich in flavonoids, nutrients found in many fruits and vegetables that protect plants from toxins and that, as antioxidants, repair cellular damage from free radicals. The flavonoids in cocoa and chocolate, called flavanols, may also lower blood pressure, improve circulation to the brain and heart, and make platelets less likely to clot. Unlike dark chocolate, milk chocolate has little of one crucial flavanol, epicatechin, left in it after processing.

Aspirin 'safe' for brain-bleed strokes

Patients who have had a stroke caused by bleeding in the brain can safely take aspirin to cut their risk of future strokes and heart problems, according to a new study.

Aspirin thins the blood and so doctors have been cautious about giving it, fearing it could make bleeds worse.

But The Lancet research suggests it does not increase the risk of new brain bleeds, and may even lower it, according to BBC.

Experts say the "strong indication" needs confirming with more research.

Only take daily aspirin if your doctor recommends it, they advise.

Aspirin benefits and risks

Aspirin is best known as a painkiller and is sometimes also taken to help bring down a fever.