energy budgets and diet

• energy input-energy output= energy budget

  • energy output in life processes eg growth, movement,respiration,reproduction
• balanced


  energy input=energy output to maintain weight
• weight gain

  • energy input is larger than energy output
  • excess energy converted into fat=weight gain
  • can become overweight or obese
• weight loss

  • energy intake less than energy output
  • blody takes energy from fat reserves
  • if remains can become underweight
• obesity indicators


  BMI above 30

  wait to hit ratio= above 0.85(men) above 1.0(women)