Diet is defined as the modification of eating habits so as to meet nutritional needs and achieve health. In simple terms, diet is the quantity of food consumed by an organism or a person. The consumption of food is considered important since it determines the balance of nutrients and other physiological processes of an organism. It is a known fact that the consumption of food determines the growth and metabolic rate of an organism and the quality of life. A high-calorie diet leads to obesity, whereas a low-calorie diet results in energy loss.
A number of eating habits are encouraged by most dietitians. Eating different kinds of fruits, vegetables, whole grain foods, lean meat, low fat dairy products and other foods rich in carbohydrates are considered healthy eating habits. The dietary pattern and amount of protein, carbohydrates and fats determine the body mass index or BMI of an individual. Since each of these components is necessary for the growth of an individual and to sustain his health in later life, it is often categorized in various ways.
According to some dietitians, one should follow a low calorie diet in order to lose weight. Low calorie diets result in less energy loss and increase the risk of gaining weight. In contrast, consuming foods with a low carbohydrate content results in more loss of calories and less fat and increased energy levels.
Most people prefer to consume diets with low-fat diet in order to reduce weight, decrease risk of heart diseases and decrease the risk of developing many kinds of cancers. According to some dietitians, low-fat and low-calorie diets may result in long-term complications such as diabetes, atherosclerosis and cardio-vascular diseases. Some low-carbohydrate diets recommend the intake of special food energy supplements or food-energy drinks. According to experts, energy supplements may be useful in getting rid of hunger.
Vegetable oils, butter and other dairy products have low nutritional value. Moreover, high-fats and high-sugar contents of foods can cause a rapid weight gain. Therefore, the consumption of fatty acids (omega 3) and grains like wheat, oats, barley, rye and whole-grains are encouraged. According to experts, fruits and vegetables contain all the essential nutrients required by the body. According to some nutritionists, fruits and vegetables are rich in fiber, minerals, vitamins, antioxidants and phytochemicals.
Although many studies have shown that weight loss diet works by boosting the rate of fat burning enzymes and hormones in the body, one study showed that appetite was affected by these supplements. The researchers reported that the appetite suppressed with these appetite suppressants. In addition, this study is also an example of taking appetite suppressant drugs without showing any side effects.