Human nutrition is the science that studies how food and drink affect our health. It focuses on how the body uses nutrients from food and drink to maintain good health, grow, and develop. Proper nutrition is essential for healthy living and can help prevent many diseases. A balanced diet includes a variety of foods from the five main food groups: fruits, vegetables, grains, proteins, and dairy products. Eating a wide range of foods helps ensure that you get all the vitamins and minerals your body needs to stay healthy. Additionally, it’s important to limit processed foods high in added sugar, salt, fat, or calories as these can lead to weight gain or other health problems. Eating a balanced diet also means limiting alcohol consumption and avoiding smoking. Exercise is also important for maintaining good physical health; regular physical activity helps improve muscle strength and endurance while reducing stress levels.