Nutrition 3

ThiQar college of MedicineFamily & Community medicine dept.

Nutrition Lecture 2-part 2 Third stage by: Dr. Muslim N. SaeedFeb 11th ,2021

Vitamins & minerals

Vitamins are essential organic nutrients, required in small amounts, that can not be synthesized by the body.- required for growth maintenance, reproduction and lactation.
Vitamins are either:
1. Fat soluble vitamin: a vitamin that can be stored and accumulated in the liver and other fatty tissues.
2. Water soluble vitamin: a vitamin that can not be stored in the tissues. Must be provided regularly as deficiencies can develop in a short time.

Vitamin supplements:

Antioxidants

What are antioxidants?Substances that fight free-radicals in our bodies.-free radicals are compounds within our bodies that may lead to chronic disease and/or are involved in cell tissue damage.Examples of vitamins that contain antioxidants are .. C, E , and Beta Carotene.

Water soluble vitaminsvitamin C , and B-vitamns

Vitamin B1 (thiamine):-

-Unstable at high temperature . *Adult RDA =1 mg/day for men
-Destroyed by alkaline materials. 0.8 mg/day for women
Vitamin B1 deficiency usually presented as :
1.Affection of children growth.
2.Neuritis.
3.Irritability and depression (psychological symptoms)
4.Beriberi disease
-Wet type (in cases of extreme deficiency)
-Dry type

Vitamin B2 (Riboflavin):Sources are liver ,meat , eggs and milk.

Vitamin B3(Niacin):

Food sources of vitamin B3

Vitamin B6 (Pyridoxine):

Food sources of vitamin B6

Vitamin B9( Folate, Folic acid):

Effect of Folate deficiency:

Vitamin B12(Cobalamin):

-Its deficiency lead to pernicious anemia.
-Its liver store depleted in 3-6years.

Vitamin C (ascorbic acid , ascorbate)