A study finds that small dietary changes have big impacts on longevity. For example, a hot dog could cost you 36 minutes of healthy life, while a serving of nuts could gain 26 minutes.

Becoming active later in life proves to be nearly as beneficial to heart health and longevity as life-long exercising, providing hope for people who have been sedentary for most of their earlier life.

A 20-year-long study finds higher walnut intake links to increased life expectancy. In another study, people who ate more pecans had an average reduction of 5% in total cholesterol and between 6% and 9% in LDL.

Researchers have developed a mathematical model that predicts the optimal exercise regime for building muscle, using theoretical biophysics.