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Main Types of Vitamins

 

Vitamin Type Functions Sources
Vitamin A (Retinol) Fat-soluble - Promotes good vision (especially night vision) - Supports immune function - Maintains healthy skin and tissues Liver, carrots, sweet potatoes, spinach, eggs
Vitamin D (Calciferol) Fat-soluble - Helps the body absorb calcium and phosphorus - Strengthens bones and teeth - Supports immune system Sunlight, fatty fish, fortified dairy products, egg yolks
Vitamin E (Tocopherol) Fat-soluble - Acts as an antioxidant - Protects cells from damage - Strengthens the immune system Nuts, seeds, vegetable oils, leafy greens
Vitamin K (Phylloquinone) Fat-soluble - Essential for blood clotting - Supports bone health Leafy greens (spinach, kale), broccoli, Brussels sprouts
Vitamin B1 (Thiamine) Water-soluble - Converts carbohydrates into energy - Supports nerve function Whole grains, pork, legumes, nuts
Vitamin B2 (Riboflavin) Water-soluble - Helps with energy production - Maintains healthy skin and eyes Dairy, eggs, leafy greens, lean meats
Vitamin B3 (Niacin) Water-soluble - Aids in energy production - Supports digestive and nervous system health Poultry, fish, whole grains, peanuts
Vitamin B5 (Pantothenic Acid) Water-soluble - Helps produce hormones - Converts carbohydrates, fats, and proteins into energy Meat, eggs, whole grains, avocados
Vitamin B6 (Pyridoxine) Water-soluble - Supports brain health - Helps produce neurotransmitters and red blood cells Poultry, bananas, potatoes, fortified cereals
Vitamin B7 (Biotin) Water-soluble - Supports metabolism of fats, carbohydrates, and proteins - Promotes healthy hair, skin, and nails Eggs, nuts, whole grains, sweet potatoes
Vitamin B9 (Folate/Folic Acid) Water-soluble - Supports DNA synthesis and cell growth - Crucial for fetal development during pregnancy Leafy greens, legumes, citrus fruits, fortified cereals
Vitamin B12 (Cobalamin) Water-soluble - Aids in red blood cell production - Supports brain and nerve function Meat, fish, dairy, fortified cereals
Vitamin C (Ascorbic Acid) Water-soluble - Acts as an antioxidant - Boosts immune function - Aids in collagen production and wound healing Citrus fruits, bell peppers, strawberries, broccoli

Key Points:

  • Fat-soluble vitamins (A, D, E, K) are stored in the body and can build up to toxic levels if overconsumed.
  • Water-soluble vitamins (B-complex and C) are not stored in the body and need to be replenished regularly through diet.

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