Want to stay sharp in old age? Look after the grandchildren - but only once a week

• Grandparents benefit from looking after children once a week
• Researchers found it increases mental sharpness, combating Alzheimers
• However if tasked with childcare five days a week it is detrimental

For most parents, having grandma take care of the children once in a while is a godsend.

But it seems she may not be sharing the benefits – at least not if she does it too often. Looking after the children for five days a week or more can make grandmas less mentally sharp, a study claimed yesterday.

Read more: http://www.dailymail.co.uk/health/article-2600552/Want-stay-sharp-old-age-Look-grandchildren-week.html