What is a Low-Calorie Diet?

A low-calorie diet allows you to eat fewer calories by eliminating foods that are high in calories. Low calorie diets are usually used for weight loss.

Eating foods that are high in nutritional value is important when you are on a low-calorie diet. This will help you to get the nutrients you need for good health while using your excess body fat for energy.

A low-calorie diet usually consists of foods that are high in fiber, like fruits, vegetables, nuts, seeds, beans and peas. At the same time, foods that are high in sugar and foods made from white flour, trans fats or saturated fats must be reduced significantly or avoided as much as possible.

You can expect to lose about one or two pounds a week on a sensible low-calorie diet. That would mean consuming about 500 calories less than you burn. For example, if you are maintaining your weight with 2000 calories, a diet that provides 1500 calories should allow you to lose one pound a week. This estimate is based on the theory that you have to burn an excess of 3500 calories in order to lose one pound.

Increasing your level of physical activity will enhance the effectiveness of your low-calorie diet by boosting your metabolism.  As a result, you may be able to lose weight at a reasonable rate without starving yourself.

Keep in mind that very low-calorie diets can put you at risk for nutritional deficiencies. As a nutritionist, I don’t recommend this extreme approach. However, if you are determined to go this route, talk to your healthcare provider and a registered dietitian to get a clear idea of the risks involved. Comprehensive medical supervision is essential for anyone determined to go on this type of diet. 

You would most likely need to take nutritional supplements to make up for the low nutrient intake that usually results from a very low-calorie diet. That's about 600 to 800 calories per day. Clearly, at this level, you would not be able to get all of the vitamins, minerals and other compounds that your body needs to function properly.

A safe goal to aim for on a low-calorie diet is between 1400 and 1800 calories per day. If you are very active, you might even be able to eat a little more and still lose weight.

Please note that information provided on this site is for education and informational purposes only. Always talk to your personal healthcare professional before making making any major changes to your diet or before  taking large amounts of supplements.

When to Seek the Help of a Registered Dietitian

According to the American Dietetic Association, there are nearly 70,000 registered dietitians in the United States. But chances are, even if you have been diagnosed with a medical condition that requires attention to your diet, your doctor may not have referred you to a dietitian.

Unfortunately, many doctors either don't understand the critical role that diet plays in preventing and treating disease or simply choose to ignore this critical need. Consequently, you have to take things into your own hands and ask for a nutrition referral. This is particularly true if the doctor says, "Diet."

When it comes to your health, what you eat as well as what you don't eat is critical. So, get that referral. And ask your insurance company about paying for the consult. After all, with proper diet and lifestyle changes, you could improve your health and save the insurance company bundles of money.

Here are a few conditions for which you will need a referral to a registered dietitian, the food and nutrition expert:

• Diabetes. If you have diabetes, a registered dietitian can help you adjust your food intake to prevent dangerous spikes and lows in your blood sugar. Obesity is often a problem for people with diabetes, so you would certainly want to lose some weight if you are overweight. And with the help of your dietitian, you can succeed.
• Heart disease. Heart disease may worsen if you are overweight, have dangerously high cholesterol or triglyceride levels, or if you have high blood pressure. A registered dietitian will walk you through the steps you can take to correct the underlying problems so that you can get back to living an active and fulfilled life.
• High cholesterol. Cholesterol is essential for a number of important living processes. But high levels have been associated with heart disease and stroke. By consulting with a registered dietitian, you will be able to choose foods wisely so as to keep your cholesterol down.
• High triglycerides. Like cholesterol, high triglycerides can cause plaque to build up in your arteries and damage your heart and blood vessels. A registered dietitian can help you find ways to manipulate your diet to prevent the damage caused by high triglycerides.
• High blood pressure. Uncontrolled high blood pressure can lead to a heart attack or stroke. Making changes to your diet, consuming more fiber, choosing healthy fats, reducing your salt intake if you are salt-sensitive, and losing weight if you are obese can help to lower your blood pressure. Stress can also cause your blood pressure to increase. Working with a registered dietitian, you will be able to identify strategies for controlling your blood pressure. 

These are just a few reasons why you should ask your doctor for a referral. To find a registered dietitian, visit the American Dietetic Association website, www.eatright.org and click on "Find a Dietitian."