Grandkids can boost brainpower

Spending a time each week with grandkids can help older women keep a clear mind, a new study shows.

But there's a potential downside: Taking care of the grandkids five days a week or more may have a negative impact on brain power, Newsmax Health reported.

The study included 186 Australian women, aged 57 to 68, who took three different tests of mental acuity. Those who spent one day a week looking after grandchildren did best on two of the three tests.

However, those who looked after grandchildren for five or more days a week did worse on one of the tests, which evaluated memory and mental processing speed.