Add Yahoo as a preferred source to see more of our stories on Google. A sunscreen’s SPF, or sun protection factor, indicates how much protection a product offers.Photograph: Sean Justice/Getty Images ...

Dementia is a progressive loss of cognitive abilities, such as memory, that is significant enough to have an impact on a person’s daily activities. It can be caused by a number of different diseases, ...

As we bask in the anticipation of spring, a familiar cautionary whisper resurfaces – the age-old advice about the perils of too much sun exposure. Should we fear the sun? From its benefits and risks ...

People may think about all the stress and anxiety that comes with parenting. But new research shows that parents’ brains may actually get an unexpected benefit from raising children. A study by ...