Why someone health not sound health | Why someone body cant take or absorption nutrition |protein synthesis problem.

If we see many persons are faced this problem ,Its may be his/her health or his/her child ,They ate better nutritious food and fruits but there health are thin or poor health ,Muscle and body height and weight are not increase , My intention to write this not for fatty health ,My intention to write this for sound health .
When we take various food and fruits lastly our body take foods and fruits last  micro particles what we called glucose, amino acid and fatty acid and glycerol's and various nutrient (Vitamin,Various micro and macro nutrient ).
  This whole processed are done a typical and systematic way that our Settled in our body by our  Greatest  God .