Before starting any weight loss plan, it is important to sit down and assess reasonable and effective nutritional goals. The key to long-term weight loss and maintenance is a balanced diet that incorporates all five food groups and provides the body with fuel and adequate nutrition. You can set reasonable calorie, protein, fat, carbohydrate and fiber goals that will be sustainable for a lifetime.
Determine the amount of calories needed on a daily basis to maintain your weight. Use an online calorie calculator to help figure this out. (See Resources.) The calculator will ask for your height, weight, gender and physical activity amount.
Take your daily calorie total and subtract between 250 and 1,000 calories. This will be your weight loss calorie goal. A 250-calorie reduction will produce a 1/2-lb. loss a week. A 500-calorie reduction will produce a 1-lb. loss a week. A 1,000 calorie reduction will produce a 2-lb. loss a week.
Calculate the amount of your daily calories that should come from carbohydrates. According to the Institute of Medicine's Acceptable Macronutrient Distribution Range (AMDR), 45 to 65 percent of calories should come from carbohydrates.
Take your weight-loss calorie level and multiply by a number between .45 to .65, which is reflective of the 45- to 65-percent goal. This is the number of calories that should come from carbohydrates. To convert into grams of carbohydrates divide the calories by 4. For example, 1,200 calories X .45 = 540 calories from carbohydrates daily. 540 calories from carbohydrates / 4 = 135 g of carbohydrates daily.
Compute your amount of daily fat calories. Despite all the low-fat claims to weight loss, the AMDR for fat is 20 to 35 percent of daily calories.
Multiply your weight loss calorie level by .20 to .35 to find the amount of calories needed from fat. To find the daily grams, divide the calories by 9. For example, 1,200 calories X .25 = 300 calories from fat daily. 300 calories from fat / 9 = 33 g of fat daily.
Determine your amount of daily protein calories. Protein is integral for weight loss, muscle building and satiety. Based on the AMDR, protein should contribute 10 to 35 percent of total calories.
Multiply your weight loss calorie level by .10 to .35 to find the amount of calories needed from protein. To find the daily grams, divide by 4. For example, 1,200 calories X .30 = 360 calories from protein daily. 360 / 4 = 90 g of protein daily.
Calculate the amount of fiber you need daily. The Institute of Medicine recommends 25 g and 38 g of fiber daily for women and men under the age of 50, respectively, or approximately 14 g of fiber for every 1,000 calories consumed. Add fiber into your diet gradually and drink plenty of water.
For example, a 1,200-calorie diet would need to provide at least 18 g of fiber each day.
- "Dietary Reference Intakes: The Essential Guide to Nutrient Requirements"; Jennifer Otten, Jennifer Pitzi Hellwig and Linda Meyers; 2006
- Institute of Medicine: Dietary Reference Intakes - Macronutrients
- National Institute of Health: Clincial Guidelines on the Identification, Evaluation and Treatment of Overweight and Obesity in Adults