People with poor physical fitness in their 40s may have lower brain volumes by the time they hit 60, an indicator of accelerated brain aging, according to new research presented at the American Heart Association EPI/Lifestyle 2015 meeting.

The latest gender-specific research on heart disease continues to show differences between women and men, yet gaps remain in how to best diagnose, treat and prevent this number one killer of women, according to studies published in Circulation: Cardiovascular Quality and Outcomes, an American Heart Association journal.

In the largest, most comprehensive, nationwide study to examine the prevalence of allergies from early childhood to old age, scientists from the National Institutes of Health report that allergy prevalence is the same across different regions of the United States, except in children 5 years and younger.

With excessive sodium intake the culprit in health problems ranging from hypertension to osteoporosis and kidney disorders, health experts are in agreement that Americans should reduce the amount of salt they consume. Just how to do that is challenging, given the abundance of salty snacks and high-sodium commercial prepared foods that are commonplace in our diets.