Add Yahoo as a preferred source to see more of our stories on Google. Want to lose weight? Understanding how calories actually work is key - Julia Lena Morell You may have a pretty good idea of how ...

Use our free calorie calculator to determine the right caloric intake for your health and weight loss goals.

Walking 10,000 steps per day may help you achieve your weight loss goals, but it's not a guarantee. Erik Isakson/Getty Images The idea of walking 10,000 steps a day, around 5 miles on average, is a ...

Corrections & clarifications: An earlier version of this story misspelled the name of the spokesperson for the Academy of Nutrition and Dietetics. She is Caroline Susie. Few things are as essential as ...

Calories can be confusing — but they don't have to be. From consuming them to burning them, we got expert answers to your most-searched questions about calories and what they mean for our weight and ...

How many calories you eat a day depends on your physical activity level, age, and sex. If you want to lose weight you need to eat fewer calories than your body burns. If you want to gain weight, you ...