A new Canadian study says straining to lift heavy weights isn't the only way to pump up muscles. Researchers say similar results can be achieved by lifting light weights a greater number of times:

The secret is simply to pump iron until muscle fatigue sets in, says Stuart Phillips, PhD, associate professor of kinesiology at McMaster.

"Rather than grunting and straining to lift heavy weights, you can grab something much lighter but you have to lift it until you can't lift it any more," Phillips says in a news release."

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Next, Japanese scientists have used brain scans to reveal that "baby talk" — the goos and coos parents make to infants — actually plays a crucial role in language development:

The participants' brain activity was monitored while they listened to recorded baby talk, which triggers brain activation patterns similar to those that occur when someone speaks baby talk, also called infant-directed speech (IDS).

The brain scans showed that mothers with preverbal infants had increased brain activity in areas of the brain that govern language. This heightened brain activity did not occur in any other group, including mothers whose children had started to speak, according to a Riken news release.

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Research from the Fred Hutchinson Cancer Research Center in Seattle shows that men who take a daily, low dose of aspirin may cut their risk of developing prostate cancer by as much as 30 percent:

A 75mg tablet taken on a daily basis has a powerful protective effect against the disease, according to scientists.

The painkiller appears to work by blocking the effect of enzymes which cause inf lammation thought to be a key factor in the development of prostate cancer.

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