By Connie Peete – Livestrong.com
According to Mayo Clinic, your daily calorie requirements depend on your gender, age, body size and composition, and your daily activity level. When you consume more calories than you need, the body stores the extra calories as fat, which causes weight gain. When you consume considerably fewer calories, your body uses the calories from the stored fat, which causes weight loss. Your daily intake should stay above 1,500 calories if you are a man, or 1,200 calories if you are a woman.