Nutrition & Losing Weight In 30 Days

Weight loss is a result of achieving a negative energy balance, or a state in which your body does not receive adequate caloric intake to support its daily functions. Over time, you need to reach a negative energy balance of 3,500 calories to lose 1 lb. of body fat. The healthiest weight-loss programs are gradual, and losing weight in 30 days is a very realistic goal. While weight loss has more to do with caloric balance, some nutritional guidelines may help you reach your weight loss goals more easily.

Weight Loss Goals

Determine the amount of weight you want to lose in 30 days. To lose just 1 lb. of body weight in 30 days, you would need to achieve a daily negative energy balance of just 117 calories. This amounts to one less can of soda each day, or just slightly smaller portions with each meal. If you want to lose 5 lbs. of body weight in 30 days, however, you would need to achieve a daily negative energy balance of nearly 600 calories. The maximum amount of weight you can safely lose in a month is about 4 to 5 lbs.

Daily Energy Needs

To start your weight loss program, compute the exact number of calories you need to consume each day based on your daily energy needs. If you get more physical activity, have more lean body mass, are younger or have a naturally higher basal metabolic rate, your energy needs will be higher and your body needs more calories each day. You can calculate your daily energy needs using an online calculator. Most adults need about 2,000 calories each day (see references 3 and 4).

Daily Caloric Restriction

If your body needs 2,000 calories a day to support its energy needs and you want to lose 1 lb. of body fat in 30 days, you would simply need to consume 1,883 calories each day to reach your goal. If you want to lose 10 lbs. in a month, a diet of 800 calories a day would ultimately help you reach this goal. Cutting more than 500 calories from your diet each day can lead to dehydration, a loss of muscle mass, and severe damage to your vital organs, however, so avoid weight-loss goals beyond this amount.

Balancing Your Diet

Regardless of your caloric intake, you still need to obtain a balanced diet with plenty of the three macronutrients: protein, carbohydrates and fat. Protein should account for about 13 percent of your total calories, carbohydrates should amount to about 57 percent and fat should represent 30 percent. If your body requires 2,000 calories a day, and you want to lose 4 lbs. in a month, you would need about 195 calories from protein, 855 from carbohydrate and 450 from fat each day.

Low-energy Density Foods

When trying to lose weight, it is important to consume foods that have a low-energy density. Low-energy density foods contain fewer calories based on their weight than other foods, and can help you feel full while avoiding excess calories. Fruits and vegetables are examples of low-energy density foods, as much of their weight comes from water. Fruits and vegetables can also help you achieve plenty of vitamins and minerals in your diet that you may lack due to restricting your caloric intake.

Foods to Avoid

Certain foods can be detrimental to your weight-loss goals, such as saturated fats, trans fats, cholesterol and sugar. While you still need to consume about 30 percent of your calories in the form of fat, saturated and trans fats can lead to cholesterol build-up, weight-gain and cardiovascular issues. Sugar is an example of empty calories, that is, it is a food that contains energy value but does not supply your body with any nutrition. You will still need to consume other foods to meet your nutritional needs, so sugar can be a key ingredient to weight-gain.