Nutrition is the selection of foods and preparation of foods, and their ingestion to be assimilated by the body. By practicing a healthy diet, many of the known health issues can be avoided. The diet of an organism is what it eats, which is largely determined by the perceived palatability of foods. Nutrition is the intake of food, considered in relation to the body’s dietary needs. Good nutrition – an adequate, well balanced diet combined with regular physical activity – is a cornerstone of good health. Poor nutrition can lead to reduced immunity, increased susceptibility to disease, impaired physical and mental development, and reduced productivity. Food provides the energy and nutrients you need to be healthy. Nutrients include proteins, carbohydrates, fats, vitamins, minerals, and water. Healthy eating is not hard. The key is to Eat a variety of foods, including vegetables, fruits, and whole-grain products Eat lean meats, poultry, fish, beans, and low-fat dairy products Drink lots of water Limit salt, sugar, alcohol, saturated fat, and trans fat in your diet Saturated fats are usually fats that come from animals. Look for trans fat on the labels of processed foods, margarines, and shortenings.