Fat soluble vitamins:
1) Vitamin A (Retinol):
Sources: liver, fish oil, eggs, milk, butter, yellow and green vegetables.
Functions:
i) It is component of retina, pigments essential for vision . It promotes normal growth of bones, and teeth and essential for growth of epithelial tissue.
It’s deficiency causes xerophthalmia in which cornea becomes bright and thick. Its deficiency causes night blindness in which retinal pigment is not formed.
- Vitamin D( Calciferol)
Sources: liver oil, ultraviolet light, milk etc.
Functions:
i) It promotes calcium absorption from digestion tract. It is essential for normal growth and maintenance of bones.
It’s deficiency causes rickets in children in which bones become thin, soft and weak long bones bent. Its deficiency also causes osteomalacia in adult in which vertebral becomes weak and pelvic bent.
- Vitamin E (tocopherol)/ beauti vitamins:
Sources:
Vegetable oils, fish, meat, green vegetables.
Functions:
i) It inhibits the oxidation of unsaturated fatty acids. It maintains fertility and normal membrane structure also called beauti vitamin .
Its deficiency causes reproductive failure, prevents normal growth of skin and increases breakdown of unsaturated fatty acid.
- Vitamin k( Phylloquinone):
Sources: Green leafy vegetable and normally supplied by intestinal bacteria.
Function:
i) It helps in formation of prothrombin in the liver. It is necessary for the clotting of blood.