When you're restricted to bed, your body needs less energy than it does when you're up and about. Calories are simply units of energy; therefore, you need fewer calories in bed than with an active lifestyle. Even on a reduced-calorie diet, however, you still need vitamins, minerals and other nutrients.

Achieve your weight loss goals with these simple and delicious 250-calorie meal ideas. Learn how to create a low-calorie diet plan that meets your nutritional needs while limiting calorie intake.

A "calorie-free" food is any food that contains less than 5 calories per serving, according to the U.S. Food and Drug Administration. The serving size must be what is customarily consumed. Foods meeting this criterion may use "free of calories," "no calories," "calorie-free," "zero calories," "

Diet can influence a person's height, but only during childhood -- until about 2 years of age. From the age of 2 to 12 years, stunted growth can be modified in some children, but not all of them. There is no scientific data currently available to suggest that it's possible to increase an adult’s height through diet.

You may think that being pregnant is a reason to eat whatever you want, but you only need an additional 300 calories per day, KidsHealth reports. Calcium should be included in this increase in calorie requirement because it is a crucial nutrient for you and your unborn baby.

Probiotics are live microorganisms that have many health benefits. Aslo called good bacteria, probiotics, help your body in the digestive process and in fighting off harmful bacteria.

If your eating plan is leaving you cold, you may not be getting enough calories in your diet. Low body temperature is just one of the many repercussions of very low calorie intake. Following such restrictive diets can affect your metabolism and cause serious medical issues.

Saturated fat is a non-essential nutrient found in animal products and in coconut and palm oils. They are called saturated fats because hydrogen is attached to all of the available carbon bonding sites, saturating the fat molecule.

While low-calorie, high-protein diets can assist with weight loss, you can go too low. A 1,000-calorie diet is lower than the minimum recommended amount of calories both women and men should eat per day for optimal nutrition and energy. For some people, a high-protein diet plan may not be healthy.

Carbohydrates are one of essential nutrients that comprise a balanced diet. The amount that you require daily depends more on your caloric intake than your gender, although men typically require more calories and, therefore, more carbohydrates than women. Discuss your carb intake with your doctor before altering it.

Men’s caloric needs peak at about age 25 and then decline over the years. If you’re a 30-year-old man on the same diet that you had five years ago, you might not notice these body changes until you begin to gain weight. The U.S.

Diabetics must monitor their diets carefully to keep blood-sugar levels under control and prevent complications. As with healthy adults, a diabetic's caloric needs depend on gender, weight and physical activity level. If you have diabetes, discuss your calorie and nutrition requirements with your doctor or dietitian.