diet

• diet- total amount of food and liquid consumed by individuals
• food has nutrients which is important for the growth, repair and maintenance of body tissues as well as the regulation of vital processes.
• nutrients provide our body with the energy it needs in order to function.
• different food groups: carbohydrates, proteins, fats/oils, minerals, vitamins, fibre/roughage and water/liquids
• marco- large and big, micro- small
• what is needed in large amounts and small amounts of portions?

  large- carbs, liquids and protein, small- proteins and vitamins
• having night blindness or dim vision is called...

  xerophthalmia
• a balanced diet comprises of the quality and correct proportions of nutrients needed to maintain health and to suit the needs of the individual.
• humans must consume a balanced diet daily in order to obtain enough energy to carry out daily activities.
• nutrients are needed for growth, repair, and maintenance and to maintain the body in a healthy state.
• growing children and teens require more energy to:

  facilitate the growth and development process
• adults growth and development process have generally stopped so they need energy for maintenance.
• elderly people require less energy as they become less active.
• energy is higher in males than in females because males have more muscles, less fat than females and weigh more
• men require more energy and protein from the age 11 onward
• when men begin to require more energy, this is when the muscle to fat ratio begins to differ because of the development of the secondary sexual characteristics