Disorders due under-nutrition, mal-nutrition or over-nutrition:

• Under-nutrition: if man is taking a diet, with low calorific value. After long time, our body starts eating its own proteins for energy. And out muscles start reducing their size.
• Mal-nutrition: It man is taking a diet which lacks one or more essential nutrient.

Disease	Deficient nutrients	Symptoms	Cure
Kwashiorkor	Protein	Retarded growth of body,	Needy amount of protein must be taken in diet. (nuts, cheese, beens, egg, meat) etc.
Marasmus	Protein & total food	Thin limbs, dry skin, diarrhea (water/scarcity), loss of weight & retarded mental growth.	Nuts, cheese, beans, egg, meat, etc. as a protein source must be taken in diets.
Xerophthalmia (Dry eyes)	Vitamin A	Thick cornea (bacterial growth on cornea), blindness.	Sweet potatoes, carrots, green vegetables, etc.
Night blindness	Vitamin A	No vision in dim light	Sweet potatoes, carrots, green vegetables, etc.
Beriberi	Vitamin B1	Decreases in weight, heart failure, retarded growth	Proper diet with vitamin B1 (peanuts, wheat, beans).
Rickets (in children)	Vitamin D	Thin soft bones of limbs and joints but bally is swelled up	Cure: sunlight, egg fish, milk
Iron deficiency anemia	Iron scarcity in diet	Weakness, pale skin, dizziness, difficulty in breathing.	Iron supplements, pomegranate, spinach, etc.

• Over Nutrition: Over dose of nutrients in diet also cause disorders.

1. Hypercholesterolemia:- Occurs by taking excess of saturated fats i.e. butter,  ghee,  eggs, etc. cholesterol deposits on thin lining of artery & block the passage of blood. Or makes clots and this is the reason of high blood pressure in arteries as clots makes the flow of blood difficult and increases pressure.  It may cause heart attack.
2. Obesity:- Occurs by excessive intake of high colory nutrients like sugar, honey, fats. Fat stores in tissue, causes over weight & Lazy body.  It causes high blood pressure, diabetes & heart related problems. And make the body fatty and ugly.
3. Hypervitaminosis:- Hyper means excess. Excess of vitamin A in body causes hair loss, itching skin, painful swellings over long bones.
4. Fluorosis:- It is caused by excessive intake of fluorine. Teeth become mottled (Spotted and thin teeth).