Weight loss diet plans have many components: exercise (diet and exercise programs), nutritional changes, physical therapy, and other methods to manage body weight and regain strength and vitality.
Some diets, such as those promoted by Weight Watchers and its competitor, the Weight Watchers International, are designed explicitly to lose fat at a rapid, low-percentage-loss pace. Another type, such as those promoted by the Atkins Diet and similar programs, consists of a complex and gradual progression of calories, protein, vitamins, and other nutrients which promotes a sustained weight loss from a very low weight. Some people who follow these diets have experienced some, but not all, of the following:
Fat loss: Most diets can help reduce the fat in the body. However, they do not always achieve the specific fat loss or body composition goals they purport to achieve. Most diets, if left to their own devices, are not consistent over time and they have no known long-term safety record. It is also important to remember that a loss of fat and muscle is also associated with the formation of metabolic waste products, which can lead to a higher risk of disease.
As with any behavior or disease, obesity is contagious. It is especially so following weight loss diets. Many factors lead to a weight loss deficit, including lack of physical activity and poor diet choices, such as eating large quantities of carbohydrates. However, it is the individual behavior (and sometimes, lifestyle, such as smoking) that determines the long-term outcomes of obesity. Although both genetics and environmental factors play significant roles, there is some research that suggests a link between the type of lifestyle behavior, such as smoking or diet, and risk for obesity or for developing many common diseases.
The following recommendations are based on the research that suggests some links, some not, between obesity and certain risk factors for some types of disease.
Although there was insufficient research to prove a causal link between changes in behavior patterns during obesity and disease outcomes, the literature suggests that weight loss, especially at a faster or lower rate than one usually wants, can reduce some types of risk factors for certain diseases. For example, changes in body weight are associated with higher rates of certain types of cancer, diabetes, heart disease, osteoarthritis, hypertension, osteoporosis, and some forms of chronic inflammation. Changes in diet are also associated with some of the metabolic characteristics of some diseases.
To improve long-term health, most weight