Harmful effects of rapid fat loss diets -
The number on the scale doesn't differentiate between fat and muscle mass. So when losing weight very quickly it is likely you'll also lose significant muscle mass, Registered Dietitian Lisa DeFazio told INSIDER.
In fact, one study specifically compared fast and slow weight loss in terms of muscle — and found the latter is more effective at maintaining muscle mass, WebMD reported.
Sign up here to get INSIDER's favorite stories straight to your inbox. Follow INSIDER on Facebook. Read next. Close icon Two crossed lines that form an 'X'. It indicates a way to close an interaction, or dismiss a notification. HOMEPAGE Newsletters. Emily DiNuzzo. Share icon An curved arrow pointing right.
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LinkedIn Link icon An image of a chain link. It symobilizes a website link url. Copy Link. You could shed more hair than normal. You could feel cold, irritable, and listless.
Your electrolytes could get out of balance. You could stop getting your period. Your energy level could plummet.
You could lose muscle mass. Thanks for signing up! Access your favorite topics in a personalized feed while you're on the go. Fasting is an ancient form of caloric restriction. It has become more popular recently. This is partly because some animal and human studies have shown benefits to fasting for people with diabetes and obesity.
There are many different fasting regimens and it is unclear which may be the best. One of the most popular is the system. This involves 2 days a week of fasting or VLCD and 5 days a week of eating your normal diet. Diets that incorporate fasting can cause rapid weight loss.
Some fad diets also severely limit calories to achieve rapid weight loss. In some cases, these diets are not safe. In most cases, these diets are not sustainable for long enough to cause long-term weight loss.
Once you stop the diet, you are at risk for regaining the weight if you return to your old eating habits. Rapid weight loss is more about cutting calories than exercising. Talk with your provider about what type of exercise you should do while you are on this type of diet.
Your provider may suggest waiting until you are on a more long-term diet to start exercising. Rapid weight loss diet is usually for people who have health problems because of obesity. For these people, losing a lot of weight quickly can help improve:. You should only follow one of these diets with the help of your provider.
Losing more than 1 or 2 pounds 0. It can cause you to lose muscle, water, and bone density. Rapid weight loss can also cause some side effects including:. People who lose weight quickly are also more likely to gain back the weight quickly.
This can lead to other health problems. In general, a rapid weight loss diet is not safe for children. It may also not be safe for teens, pregnant women or older adults unless a provider recommends it. If you have a health condition, it is a good idea to talk with your provider before starting this or any diet plan to lose weight.
Academy of Nutrition and Dietetics website. Updated January 24, Accessed January 11, Staying away from fad diets. Updated April 13, Flier EM. In: Melmed S, Auchus RJ, Goldfine AB, Koenig RJ, Rosen CJ, eds. Williams Textbook of Endocrinology. Philadelphia, PA: Elsevier; chap Parretti HM, Jebb SA, Johns DJ, Lewis AL, Christian-Brown AM, Aveyard P.
Clinical effectiveness of very-low-energy diets in the management of weight loss: a systematic review and meta-analysis of randomized controlled trials. Obes Rev. PMID: pubmed.
Reviewed by: Sandeep K. Dhaliwal, MD, board-certified in Diabetes, Endocrinology, and Metabolism, Springfield, VA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A. Editorial team. Share Facebook Twitter Linkedin Email Home Health Library.
Diet for rapid weight loss Very low-calorie diet; VLCD; Low-calorie diet; LCD; Very low energy diet; Weight loss - rapid weight loss; Overweight - rapid weight loss; Obesity - rapid weight loss; Diet - rapid weight loss; Intermittent fasting - rapid weight loss; Time-restricted eating - rapid weight loss.
How It Works These diets are most often chosen by people with obesity who want to lose weight quickly. Very Low-Calorie Diet VLCD On a VLCD, you may have as few as calories a day and may lose up to 3 to 5 pounds 1.
Low-Calorie Diet LCD These diets usually allow about 1, to 1, calories a day for women and 1, to 1, calories a day for men.
We include Metabolism boosting drinks we think are useful for dies readers. If koss buy Metabolism boosters links on this page, we may earn a small Roasted broccoli dishes. Healthline only shows you Metabolism boosting drinks and eapid that we stand behind. Although we may be drawn to the allure of rapid weight loss advertising, health experts have traditionally recommended a slow-and-steady method. In fact, research has found that after losing weight, about two-thirds of dieters gain more than they initially dropped. Below are six other ways that slimming down too quickly can do more harm to your health than good.
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