Sunday, May 19, 2013

Are very low calorie diets a good idea?



Dear Diary,

My goal is to lose 30 lbs for my wedding which is in 6 months. I have a strategy that I just know will work. 90% of the time I will eat very little, maybe around 500 or a maximum of 600 calories per day, and during the weekend, holidays or at parties I will eat and drink whatever my heart desires with the next day being a "detox" day where I will live on vegetables and water. My friend did this and she lost so much weight, she looks great! We don't have time to exercise, but when you eat so little there is no need for it.

Yours truly,
Starved

Dear Starved,

There can be serious potential consequences to eating so few calories and also to cycling between overindulging and subsequently fasting in an effort to compensate. A lack of food can cause the body to go into starvation mode. Starvation mode is a metabolic response to the body being deprived of food.   The body is malnourished and breaks down muscle to be used as fuel in an attempt to keep vital organs functioning. Of course your friend will find every excuse in the book not to engage in physical activity, her body is exhausted! She feels sick and tired all the time as her body doesn't have sufficient energy to complete its internal processes let alone exercise! Extreme fatigue occurs as the body simply does not have sufficient energy to function. Vitamin deficiency which can lead to many dangerous conditions including anemia, edema, and even heart failure and stroke can occur. Women experience menstrual irregularities which can lead to fertility issues. And the list goes on and on!

Yes, these very low calorie diets can lead to initial rapid weight loss. However, much of this is water weight and the latter weight loss includes a significant amount of muscle loss. 

So, let me share the bottom line with you, the point at which I come into the picture...

These people come to see me and complain that they are "a mess." Yes, initially they lost weight, but now they find it impossible to sustain the very low calorie diet that they were on and find that they are regaining the weight rapidly, much quicker than they lost it, and they have very little muscle tone and complain they are "flabby." They are plain scared to eat in fear of gaining weight. They need to gradually learn to introduce a normalized eating pattern but often have difficulty eating 3 meals and snacking in between as they are afraid this is "too much food." So as you can see a vicious cycle that is extremely difficult to break is created. 

Very low calorie diets are not the way to go. They are not sustainable. Even if you are looking for rapid results you can set yourself up for long term consequences that are plain just not worth it. Instead, do yourself a favor and see a Registered Dietitian, the food and nutrition expert, to help you with your weight loss goals or just to learn how to generate a healthy lifestyle for you and your family.

Yours truly,
Idy Neuman MS, RD, CDN

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