For a 2,000-calorie diet, 20-35% of your calories should come from fat, or 400-700 calories. Dividing by nine (since each gram of fat has 9 calories), this equals 45-78 grams of fat.

Daily calorie intake estimates vary widely for older children and teenagers, according to the USDA, with a range of 1,400 to 3,200. The ranges vary based on gender, age, weight and activity level.

Those in the calorie restriction group were given a daily goal of cutting their caloric intake by 34.3%. Participants were aged 18 to 60 years old, with a range of body mass index, or BMI, of 27 ...

They found that during a two-year span, the goal for participants was to reduce their daily caloric intake by 25%, but the highest the group was able to reach was a 12% reduction.

Methods We randomly assigned 139 patients with obesity to time-restricted eating (eating only between 8:00 a.m. and 4:00 p.m.) with calorie restriction or daily calorie restriction alone. For 12 ...

Children 2 to 8 need between 1,000 and 2,000 calories, the report says. Daily calorie intake estimates vary widely for older children and teenagers, with a range of 1,400 to 3,200.