Nutrition is a process that involves the breakdown of food and other substances in the mouth to provide energy to the body. Practicing a healthy diet can lead to avoiding both known and unknown health problems. A poor diet is harmful to an individual's health and causes diseases such as kwashiorkor, scurvy, obesity and metabolic syndromes. Popkin (2011) states that “Over the past 20-30 years, the world has reduced water consumption, shifted towards sugary drinks, increased the proportion of sugary and ultra-processed foods, and reduced intake of many healthful components of our diet, including legumes, fruits and vegetables" (p. 83). Different types of foods contain various nutrients ranging from fats, carbohydrates, proteins, vitamins and water. Insufficient, unbalanced or excessive consumption of nutrients by a organism leads to malnutrition. Today, the trend of diet and nutrition is changing at a shocking rate. Good food choices positively affect an individual's health, while a poor diet has long-term negative effects on maintaining well-being. of foods, especially in today's market, contain heavy saturated fats, many carbohydrates, partially hydrogenated oils, and highly processed foods. Popkin (2011) stated that being overweight carries high risks, such as an increased chance of heart disease. blood pressure, diabetes, and arthritis (p. 84). While it's important to achieve a weight that's appropriate for your height and body type, losing weight can significantly improve your health. Healthy weight loss would include a balance between exercise and diet. The solution to losing weight in a useful way is to burn calories... half of the paper... it happens. Additionally, there are inadequate strategies associated with weight loss, such as avoiding meals or not eating, taking diet pills to destroy your appetite, or starving yourself on a diet that can result in weight gain. Therefore, people should follow the direction and control the amount of fat. intake by reading food labels. Additionally, they should enrich their diet with vegetables, fruits, fish, nuts, whole grains, lean meats and low-fat dairy products to provide their bodies with the healthy fats they need. To improve overall well-being, they should avoid boredom, frustration, stress and sedentary lifestyle by increasing their activity level. Doing simple things like walking instead of driving or using stairs instead of elevators can increase weight loss and overall well-being. So, by doing all these things, the person can have a healthy lifestyle without having any serious problems in life.