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Doctor insights on: What Supplements Should You Take On A Very Low Calorie Diet

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I'm on a low calorie diet to lose weight but when I exercise (walk), I feel tired sometimes. Do I need to add a vitamin supplement?

I'm on a low calorie diet to lose weight but when I exercise (walk), I feel tired sometimes. Do I need to add a vitamin supplement?

Coconut oil: Coconut oil is high in medium chain fats that are easily burnt for energy. I tell my patients to add a tablespoon to at least one meal a day. Beware of low fat or fat free diets. Good fats are required for optimal health. ...Read more

Dr. Arthur Heller
2,585 Doctors shared insights

Diet (Definition)

Refers to all the physical matter humans (like all living creatures) must take in on a recurring basis; only partially for energy. Like all life on planet humans are open systems which keep tearing down their structure & require intake of atoms/molecules from which to rebuild their structure. Intestinal lining cells replaced ~every 3 days. CaPO4 in bones ~every 6 years, ...Read more


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Will metabolism slow down on a very low calorie diet?

Will metabolism slow down on a very low calorie diet?

Yes: If your body does not get enough calories, it sends stress signals to the brain. These stress hormones try and preserve the body by decreasing energy used and in doing so slows the body's metabolism. ...Read more

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Will you still lose weight on a very low calorie diet if you are not in ketosis?

Will you still lose weight on a very low calorie diet if you are not in ketosis?

Yes: The danger of low calorie diet that is not balanced can cause essential muscle loss - puts your gut and heart in danger, can cause electrolyte imbalance and danger of creating gall stones - so do with caution and inform your pcp about your goal so he or she can work with you. ...Read more

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Could a very low calorie diet be successful?

Could a very low calorie diet be successful?

It can be under medi: It depends on how many colories but 800 calories diet can be successful if done under close medical supervision with vitamin supplements and regular follow ups. ...Read more

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What happens when you go on a very low calorie diet?

What happens when you go on a very low calorie diet?

Tissue breakdown: Very low calorie diets puts a person in ketosis. The body does not have the proper amounts of protein, carbohydrates and fat to carry out all the functions it has to do. You will lose fat, for sure, but you will do this at the expense of losing protein, thus muscle breakdown. A very low calorie diet shold not be undertaken unless under the care of a doctor well versed in the diet and close f/u. ...Read more

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Doctors, what are the effects of a very low calorie diet?

Doctors, what are the effects of a very low calorie diet?

Extreme dieting: Extremely low calorie intake may lead to undernourishment and can actually lower metabolic rate. ...Read more

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I've been on a very low calorie diet for the past 10 days (been busy + have just forgotten food) will I put on weight if I start to eat normal again?

I've been on a very low calorie diet for the past 10 days (been busy + have just forgotten food) will I put on weight if I start to eat normal again?

Maybe: You may put on a few pounds as your body restores its glycogen. Make sure when you start eating again you drink plenty of water and eat healthy. Lean protein, lots of vegetables, small amount of whole grain and 1-2 fruits. Just don't go crazy with fast food or junk food. ...Read more

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Can a very low calorie diet allow you to maintain lean mass?

Can a very low calorie diet allow you to maintain lean mass?

If moderate exercise: If one does some mild or moderate exercise, for 30-40 minutes, 3-4 times a week, she will likely stimulate his muscles enough to maintain them. On a "very low" calorie diet, she can get into trouble if the calories are too few (his body may break down muscle for fuel). Thus, "very low" calorie diets should be adjusted into "moderately low" calorie diets, which also have better long-term success. ...Read more

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Is there a way to prevent weight gain after a very low calorie diet?

Is there a way to prevent weight gain after a very low calorie diet?

Yes: Weight gain can be prevented or overcome by a permanent change in lifestyle and in personal outlook. If a person eats fewer calories than he needs to live on each day, his body will use the stored fuel (fat). If a person exercises more than he did before, but does not start eating more calories, then his body will use up the fat (stored fuel). Easier said than done, but definitely possible to do. ...Read more

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Can a very low calorie diet of around 650 calories for two months cause a thyroid issue?

Can a very low calorie diet of around 650 calories for two months cause a thyroid issue?

Maybe: When you do a very low calorie diet you change your metabolism into a starvation mode.
Therefore, the body is going to have to adapt. Thyroid included. It can be dangerous to do this without medical supervision. Many times I have had patients try this on their own and end up with a Gallbladder attack. Have not had thyroid issues in my practice. ...Read more

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Is there anyone on a very low calorie diet for over a week?

Is there anyone on a very low calorie diet for over a week?

Some fast that long: It is not recommended. Very low calorie diets are not sustainable. Best to reduce caloric intake by no more than 15% and sustain that. ...Read more

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Can you tell me how much weight could I lose on a very low calorie diet?

It depends: It depends on your present height and weight, your body mass, how much you exercise and the specifics of your diet. ...Read more

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I can't manage to lose anymore weight and I'm really getting worried. I'm on a very low calorie diet and workout everyday. What's wrong?

I can't manage to lose anymore weight and I'm really getting worried. I'm on a very low calorie diet and workout everyday. What's wrong?

Calorie: Please have your primary doctor refer you to a nurse practitioner who will help you improve your weight and workout. You won't get things under control for a few weeks but you will be presently surprised before long. ...Read more

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Just out of curiosity is it possible to be on a very low calorie diet but not lose weight if consuming too much foods that cause bloating like sodium?

Just out of curiosity is it possible to be on a very low calorie diet but not lose weight if consuming too much foods that cause bloating like sodium?

Bloating can be a: Sign of food allergies or gluten intolerance. Have yourself tested to make sure you know what you're allergic too. It's not the calories consumed, but the proportion of carbs to protein that will help you loose weight. Less than 1/2 cup of carbs is good with 2/3 of your plate with organic veges of 5 colors, and 4 oz of protein, lots of purified water after your meal. 1/4 cup fruit/day. Good luck! ...Read more

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Can a very low calorie diet make your heart rate slow (57bpm) and is it a problem?

Can a very low calorie diet make your heart rate slow (57bpm) and is it a problem?

Perhaps...: Bradycardia is a typical feature of individuals suffering from chronic anorexia nervosa. This is an early sign that muscle tissue in the body is being consumed for energy purposes. Your nutritional status should be reviewed by a knowledgeable physician to determine what your risk might be. ...Read more

Dr. M. Jan Dr. Jan
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I'm on a very low calorie diet &my protein intake is low. Doc says it's ok &that I can resume normal protein after I've lost weight. What do you think?

Dr. M. Jan Dr. Jan
1 doctor agreed:

It is OK: It is safe to loose about one pound of weight a week. Do not go on a crash diet because you have to physically and emotionally ready to loose weight and keep it down. Other wise you will gain more as soon as you go off the crash diet. ...Read more

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Can a very low calorie diet followed by amenorrhea for 8 months at an age of 14 cause incompetent cervix or/and infertility?

Can a very low calorie diet followed by amenorrhea for 8 months at an age of 14 cause incompetent cervix or/and infertility?

Amenorrhea/fertility: Amenorrhea can cause infertility at any stage of your reproductive life except if pregnant. Amenorrhea from eating disorders are usually the cause. There is no connection between incompetent cervix and age 14 amenorrhea. ...Read more

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Is if safe for obese-kids to have very low calorie diet?

Is if safe for obese-kids to have very low calorie diet?

Not for young kids: Obese young children who are still growing in height can stay on a low (not extremely low) calorie balanced diet. They should lose enough weight to drop down from the "severely obese" BMI range, into the "obese" range. Then, they can take advantage of their height growth combined with moderate caloric restriction, to gradually drop into the "normal" BMI range over a 1-2 year period. Exercise too! ...Read more

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Will a week of refeed (eating about 3000 calorie aday) will reset metabolism after very low calorie diet?

Will a week of refeed (eating about 3000 calorie aday) will reset metabolism after very low calorie diet?

Possibly: This type of periodic uptick in calorie intake has been successful for some athletes who train regularly and hard. But, no guarantees! ...Read more

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How much weight loss you can have on 2 months of very low calorie diet?

How much weight loss you can have on 2 months of very low calorie diet?

It depends: On your height, weight, sex, age and metabolic rate. On average a young male on a very low calorie diet (800 kcal/day) can lose up to 4-5 lbs. In a week (female 2-3 lbs./week). The heavier the start weight, the more the weight loss, unless an underlying disease like low thyroid function is in place. With intense exercise (cardio and weights) the weight loss can be more obviously. ...Read more

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Medically supervised very low calorie diet (800 calories). Ok to exercise. Principle of ketosis. Burn about 400 cal/day/hr monitor. Safe?

Medically supervised very low calorie diet (800 calories). Ok to exercise. Principle of ketosis. Burn about 400 cal/day/hr monitor. Safe?

No safe shortcuts: This type of diet often makes the body angry, decreasing calories too much too quickly will send your body into starvation mode. Less calories = weight loss, but your body will become more efficient at holding onto calories, so you will gain the weight back and then some later on. Weight watchers is the safest and most consistent in my experience with thousands of people. ...Read more

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How much time will take to lose weight on a low calorie diet?

Difficult: Low-carb diet is likely to promote weight loss, at least at first, but risky. Weight loss may or may not continue long term, depending on your commitment to following the eating plan. If you abandon the low-carb diet and return to your former eating habits, you may regain any lost weight. ...Read more

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How safe is a low calorie diet?

How safe is a low calorie diet?

How low?: Very strict diets run the risk of dehydration and ketosis and possibilities to faint, develop anemia or electrolyte disturbances (low potassium, calcium, magnesium, low vitamins etc.) less than 1200 cal/ day are probably too restrictive. ...Read more

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I need to know what is a low calorie diet?

I need to know what is a low calorie diet?

Short answer: It seems logical that if calories are the problem, you would want to eat as few of them as possible to speed weight loss. As a general rule, people need a minimum of 1, 200 calories daily to stay healthy. People who have a strenuous fitness routine or perform many daily activities need more calories. If you have reduced your calorie intake below 1, 200 calories a day, you could be hurting your body ...Read more

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How is a fad diet different than a low calorie diet?

Fad diet vs low cal: This is what they call an "age old" question: Which diet works best? There are LOTS of diets out there, most of which actually work to induce weight loss. The real issue is KEEPING THE WEIGHT OFF. I recommend people find a diet they can actually stay on for LIFE. Lower calories, increasing exercise, avoiding processed foods, and drinking at least 64 oz of water. That's a diet for life! ...Read more

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What are some things that you eat on low calorie diet?

What are some things that you eat on low calorie diet?

Meditteranean: In many cases the low cal diet can signal to the thyroid that you are in starvation mode thus preventing weight loss. A surer way to lose weight is by eating a meditteranean style diet minus any grains containing gluten and including low glycemic foods. Eating 3 meals and 2 snacks may show more results than calorie counting. Let me know how you do. 1500 cals is safe and effective. ...Read more

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Can I keep and gain muscle on a low calorie diet?

Probably not: It wold depend on the amount of protein you consume and how much you work out to develop and keep the muscles. Low calorie diets may not supply the anount of carbs, protein and fat you will need to maintain. It would depend on your height and weight and age. I would be very careful, work with a reputable sports trainer, sports medicine doctor and reputable nutritionist. Danger! Will robinson! ...Read more

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How can I get constipation relieved when on a low calorie diet?

How can I get constipation relieved when on a low calorie diet?

Fiber/fluids: Low calorie diet should include high fiber meals and you need to drink 80-100 ounces of noncafeinated, non alcoholic fluid daily. Calories have nothing to do with constipation. ...Read more

Calorie (Definition)

A calorie is the amount of heat energy needed to increase a mililiter of water 1 degree centigrade, the calorie we talk about in foods is really a kilocalorie, that is the amount of energy needed to increase a liter of water 1 degree centigrade... So if you eat a food that is 500 calories that food if burned completely has enough energy to heat a liter of ...Read more


Dr. Randy Baker
2,063 Doctors shared insights

Supplements (Definition)

A dietary supplement, also known as food supplement or nutritional supplement, is a preparation intended to supplement the diet and provide nutrients, such as vitamins, minerals, fiber, fatty acids, or amino acids, that may be missing or may not be consumed in sufficient quantities in a person's diet. Some countries define dietary supplements as foods, while ...Read more