A healthy diet is a diet helps to improve our overall health. A healthy diet provides the body with essential and adequate energy. It may contain fruits, vegetables and whole grains. The requirements for a healthy diet can be met from a variety of plant and animal based foods. Although a non-plant source of vitamin B12 is needed for those following diet. Various nutrition guides are published by medical and governmental institutions to educate all the people on what they should be eating to be healthy in their life. Nutrition facts are also mandatory to allow consumers to choose between foods and components relevant to health. Overweight and obesity are defined as abnormal or excessive fat accumulation that may impair health. Body mass index (BMI) is a simple index of weight-for-height that is commonly used to classify overweight and obesity in adults. It is defined as a person\’s weight in kilograms divided by the square of his height in meters (kg/m2).More information click here For adults, WHO defines overweight and obesity as follows: Overweight is a BMI greater than or equal to 25; and Obesity is a BMI greater than or equal to 30. BMI provides the most useful population-level measure of overweight and obesity as it is the same for both sexes and for all ages of adults. However, it should be considered a rough guide because it may not correspond to the same degree of fatness in different individuals. For children, age needs to be considered when defining overweight and obesity.The fundamental cause of obesity and overweight is an energy imbalance between calories consumed and calories expended. Globally, there has been: • An increased intake of energy-dense foods that are high in fat and sugars; and • An increase in physical inactivity due to the increasingly sedentary nature of many forms of work, changing modes of transportation, and increasing urbanization. Changes in dietary and physical activity patterns are often the result of environmental and societal changes associated with development and lack of supportive policies in sectors such as health, agriculture, transport, urban planning, environment, food processing, distribution, marketing, and education. For more details click here Some important tips for weight loss that you should follow for your weight loss such as 1. Do not skip breakfast. 2. Eat regular meals. 3. Eat plenty of fruit and vegetable 4. Get more active work 5. Drink plenty of water 6. Eat high fiber good that is good for health 7. Know about food labels 8. Use smaller plate 9. Do not eat junk food 10. Do not take alcohol 11. Have to pane your diet list 12. Regular exercising We should maintain our diet plan case over weights not for health and reduce life so everyone should conscious about their health and have regular exercise too.