Food for Life Food, water, & air are life’s basic needs. The center for hunger is located in the brain’s hypothalamus. In addition to physical needs, eating is also a social experience. Many fat people use food for emotional relief. Hypothalamus
Nutrition Good nutrition is one of the main factors in good health. Nutrition: the foods that the body needs to grow, develop, and work properly. Diet: everything that you eat and drink during the day. Calories are measurement of energy in food.
The Six Types of Nutrients Carbohydrates Proteins Lipids or fats Vitamins Minerals Water
Carbohydrates Carbohydrates are the starches & sugars that provide our body with most of its energy. Carbohydrates come in 2 forms: Simple & Complex Simple carbohydrates are sugars which are found in fruits(fructose), milk(lactose), & simple sugar(glucose).
Carbohydrates Complex carbohydrates are starches that are found in bread, cereal, pasta & vegetables. (good source of fiber) 1 gram of carbohydrate has 4 Calories. 60% of our daily Calories should come from carbohydrates.
Proteins Proteins are needed to build, repair, and maintain body cells and tissues. Consuming proteins is crucial during childhood & teenage years. Proteins can also be used for energy.
Proteins 1 gram of protein provides 4 Calories. The building blocks of proteins are called amino acids. Animal products & vegetables together can provide all the necessary proteins.
Lipids Lipids are source of energy and are essential for body functions. Some vitamins can only be absorbed with presence of lipids. Lipids play important role in production of sex hormones. Layer of fat under the skin keeps us warm. Lipids surround the internal organs for cushion and protection against injuries. One gram of fat has 9 Calories.
Lipids Excess fat is stored in body as extra weight. Lipids are found in milk, butter, egg, cheese, meat and nuts. Lipids are either saturated or unsaturated. Saturated fats can turn to cholesterol in body & are solid in room temperature. Lipids that come from plants do not contain cholesterol. Unsaturated fats are liquid at room temperature & are called oils. Not more than 20% of daily calories should come from fat.
Vitamins Vitamins are substances needed by body in small quantities. They regulate many body functions. Vitamins don’t have any calories. Vitamins are carried in body by either water or lipids. Fat-soluble vitamins are A, D, E, & K. Vitamin supplements are recommended for people who do not eat enough fruits and vegetables.
Minerals Minerals are elements needed in small quantity. They help regulate & maintain many body functions. Minerals are found in most food items. Examples of minerals are calcium, iron, fluoride, iodine, … Minerals don’t have any calories.
Water Water is the most common nutrient that we consume. Almost 60% of our body weight is water. Water carries other nutrients in the body. Water also helps digestion and waste elimination. We need at least 6 glasses of water per day.