Vitamin B,B1 and B2

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Chapter 3 : Vitamin B, B1 and B2

Vitamin B arrow_upward

  • B vitamins are a group of water-soluble vitamins that play important roles in cell metabolism.
  • The B vitamins were once thought to be a single vitamin, referred to as vitamin B (much as people refer to vitamin C or vitamin D).
  • In general, supplements containing all eight are referred to as a vitamin B complex.
  • Individual B vitamin supplements are referred to by the specific name of each vitamin (e.g., B1, B2, B3 etc.).

  • Types of Vitamin B arrow_upward

  • Vitamin B complex consists of eight water soluble vitamins that have important role in metabolism in the body.
  • It consists of:
    • Vitamin B1 (Thiamine)
    • Vitamin B2 (Riboflavin)
    • Vitamin B3 (Niacin)
    • Vitamin B5 (Pantothenic acid)
    • Vitamin B6 (Pyridoxine)
    • Vitamin B7 (Biotin)
    • Vitamin B9 (Folic acid)
    • Vitamin B12

    Vitamin B1 (Thiamine) arrow_upward

  • Vitamin B1, also called Thiamine is a water-soluble vitamin that is essential for the breakdown of carbohydrates into the simple sugar glucose.
  • Thiamine is also important for the proper functioning of the nervous system.

  • Functions of Vitamin B1 arrow_upward

  • The important functions of vitamin B1 are as:
    • Vitamin B1 is very essential for converting carbohydrate into energy.
    • The most important use of thiamine is in the treatment of beriberi, a condition caused by a deficiency of thiamine in the diet.
    • Vitamin B1 helps in maintaining a healthy nervous system.
    • Vitamin B1 is necessary for healthy mucous membranes.
    • It helps in the digestion of food.
    • It provides strength to muscles.
    • It is very useful for the proper functioning of heart.

    Food Sources of Vitamin B1 arrow_upward

  • The following foods are good sources of Vitamin B1:
    • Whole-grain cereals
    • Rye and whole-wheat flour
    • Wheat germ
    • Navy beans and kidney beans
    • Liver
    • Yeast
    • Whole meal products
    • Peanuts
    • Pork
    • Milk

    Symptoms of Vitamin B1 Deficiencies arrow_upward

  • Poor circulation
  • Cold hands and feet/warm hands and feet
  • Fluid retention
  • Underactive thyroid
  • Fatigue
  • Depression
  • Insomnia
  • Debilitating weakness
  • Painful muscles

  • Symptoms of Vitamin B1 Overdose arrow_upward

  • Vitamin B1 (i.e., thiamine) toxicity effects may include the following:
    • Rapid heartbeat
    • Low blood pressure
    • Irregular heartbeat
    • Headache
    • Symptoms of allergic reaction
    • Weakness
    • Convulsions

    Vitamin B2 (Riboflavin) arrow_upward

  • Vitamin B2, also called Riboflavin, is a water-soluble vitamin present in most animal and plant tissues.
  • It is one of the essential B vitamins, known to help support adrenal function, help calm and maintain a healthy nervous system, and facilitate key metabolic processes, including helping to turn food into energy.

  • Functions of Vitamin B2 arrow_upward

  • Vitamin B2 helps in converting carbohydrate into energy and this energy is utilized by the body.
  • It is very useful for normal tissue respiration.
  • Necessary for healthy mucous membranes.
  • Good for skin, nails and eyes.
  • Can help prevent cancer.

  • Food Sources of Vitamin B2 arrow_upward

  • Some of the best sources of riboflavin are:
    • Meat
    • Eggs
    • Legumes (like peas and lentils)
    • Nuts
    • Dairy products
    • Green leafy vegetables
    • Broccoli
    • Asparagus, and fortified cereals

    Symptoms of Vitamin B2 Deficiencies arrow_upward

  • Sore lips.
  • Inflammation of tongue and lips.
  • Eyes overly sensitive to light and easily tired.
  • Itching and scaling of skin around nose, mouth, scrotum, forehead, ears, and scalp.
  • Trembling
  • Insomnia

  • Symptoms of Vitamin B2 Overdose arrow_upward

  • Vitamin B2 is not known to cause overdose side effects because excessive amounts are not retained by the body.

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