Gregory Okin is quick to point out that he does not hate dogs and cats. Although he shares his home with neither - he is allergic, so his pets are fish - he thinks it is fine if you do. But if you do, he would like you to consider what their meat-heavy kibble and canned food are doing to the planet.

Up to one-third of the world's dementia cases could be prevented by addressing factors such as education, hypertension, diet, hearing loss and depression over the course of a person's lifetime, according to a new report presented Thursday at the Alzheimer's Association International Conference in London.

A new study claims to have found a connection between drinking diet soda and being at higher risk of developing dementia and stroke. However, the study's author is calling for more research to be done.

Calorie counting is a useful way to lose weight, but a new study suggests a fitness tracker could sabotage your efforts.

Americans trying to stay healthy have abandoned sugary drinks for diet drinks in droves over the past few decades on the theory that the latter is better than the former. Now, more evidence has emerged to refute that rationale.