Vitamins are essential nutrients that support growth, maintenance and regulation of bodily processes. There are 13 vitamins that are divided into fat-soluble and water-soluble categories. Fat-soluble vitamins include A, D, E and K which are stored in the body and have different deficiency and toxicity symptoms compared to water-soluble vitamins like C and the B vitamins which are not stored and require more regular intake. A balanced diet with variety is important to obtain the necessary vitamins, while too little or too much of certain vitamins can cause harm.
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Vitamins
1. VITAMINS
Vitamins are essential to life
Vitamins are required for:
Growth
Maintenance
Regulation of body processes
2. VITAMIN
Vitamins do not supply energy
However, some vitamins do function as coenzymes in
the release of energy from carbohydrates, proteins and
fats
Some vitamins available from foods in inactive
forms known as precursors
Once inside the body, precursors are converted into an
active form of the vitamin
3. VITAMIN
13 different vitamins, each with its own roles
Vitamins grouped into two major categories:
Fat-soluble (4 fat soluble)
Vitamin A
Vitamin D
Vitamin E
Vitamin K
Water-soluble (9 water soluble: 8 B vitamins & C)
Thiamin
Riboflavin
Niacin
Biotin
Pantothenic acid
Vitamin B6
Folate
Vitamin B12
Vitamin C
4. VITAMIN
Fat-soluble vitamins
Found in fats and oils of foods
After absorbed enter lymph, then
blood
Protein carriers for transport
Stored (fatty tissue/liver)
Doesn’t need as regularly - weekly,
monthly; because stored
Deficiencies slow to develop;
because stored
Toxicities more likely; because
stored (mostly from supplements)
Precursors
Fecal excretion
Water-soluble vitamins
Found in watery parts of foods
After absorbed move directly
into blood
Transported freely in blood
Not stored
Needed more regularly – every
1-3 days; because not stored
Deficiencies fast to develop;
because not stored
Toxicities less likely (large
amounts can overwhelm)
Usually no precursors
Urine excretion
5. VITAMIN
Consuming vitamins in the right amount is
important
Inadequate amounts can cause harm and excessive
amounts can cause harm
More is not better
The fact a compound can be essential and harmful
is true of most nutrients
6. Getting The Variety of
Vitamins
Normally, a well balanced diet based on the
Food Plan and a variety of foods will provide
enough vitamins.
A variety of foods is needed to have a healthy
diet.
7. VITAMIN A
Other Names
Retinol ( Vit . A group )
Retinal (Aldehyde group )
Retinoic acid ( Acid group )
8. VITAMIN A
1. Vitamin A: 1 IU is the biological equivalent of
0.3 mcg retinol.
RDA
900 µg RAE/day
700 µg RAE/day
Upper Level
3,000 ug/day
9. VITAMIN A
FUNCTIONS
Maintenance of cornea, epithelial cells, mucous
membranes, skin
Bone and tooth growth
Reproduction , Immunity
Vision.
ABSORPTION
Vit. A is almost completely absorbed in
normal human organs and pass along with
fat through the lymphatic system into the
blood streams .
10. VITAMIN A
Food Source
Retinol: fortified milk, cheese, cream, butter,
fortified margarine, eggs, liver.
Beta-carotene: spinach and other dark leafy
greens; broccoli, deep orange fruits (apricots,
cantaloupe) and vegetables (squash, carrots,
sweet potatoes, pumpkin)
11. VITAMIN A
Deficiency Disease
Hypovitaminosis A
Deficiency Symptoms
Night blindness
Corneal drying (xerosis),
softening of the cornea (keratomalacia), corneal
degeneration and blindness
Triangular gray spots on eye (Bitot’s spots)
12. VITAMIN A
Toxicity Disease
Hypervitaminosis A
Toxicity Symptoms
Chronic toxicity
Increased activity of osteoclasts causing reduced bone
density
Liver abnormalities
Birth defects
Acute toxicity
Blurred vision
Nausea, vomiting, vertigo
Headaches, increased pressure inside the skull mimicking
a brain tumor
13. VITAMIN D
Other Names
Calciferol, 1,25-dihydroxy vitamin D (calcitriol)
The animal version is vitamin D3 or cholecalciferol
The plant version is vitamin D2 or ergocalciferol .
15. VITAMIN D
Functions
Mineralization of bones (raises blood calcium and
phosphorus by increasing absorption from
digestive tract, withdrawing calcium from bones,
stimulating retention by kidneys)
16. VITAMIN D
Food Sources
Synthesized in the body with the help of sunlight
Fortified milk, margarine, butter, cereals and
chocolate mixes
Veal, beef, egg yolk, liver, fatty fish (herring,
salmon, sardines) and their oils
18. VITAMIN D
Rickets in Children Deficiency Symptoms
Inadequate calcification, resulting in misshapen bones
(bowing of legs) Enlargement of ends of long
bones(knees, wrists)
Deformities of ribs (bowed, with beads or knobs)
Delayed closing of fontanel, resulting in rapid
enlargement of head
Lax muscles (Lax abdomen is a condition where the muscles of
abdomen (rectus abdominis) become weak and flabby resulting in
loss of elasticity of muscles, leading to protrusion of belly.)
resulting in protrusion of abdomen
Muscle spasms
19. VITAMIN D
Osteomalacia in Adults Deficiency Symptoms
Loss of calcium resulting in soft, flexible, brittle, and
deformed bones
Progressive weakness
Pain in pelvis, lower back and legs
20. VITAMIN D
Toxicity Disease
Hypervitaminosis D
Toxicity Symptoms
Elevated blood calcium
Calcification of soft tissues (blood vessels, kidneys,
heart, lungs, tissues around joints)
Frequent urination
22. VITAMIN E
Functions
Antioxidant (stabilization of cell membranes,
regulation of oxidation reactions, protection of
polyunsaturated fatty acids and vitamin A
It is protect the red blood cells from haemolysis by
oxidising agents .
It also protection to liver injury caused by carbon
tetrachloride poisoning.
23. VITAMIN E
Food Sources
margarine, salad .
Leafy green vegetables
Liver, egg yolk, nuts and seeds
Some oils are good sources :
coconut oil
groundnut oil
soybean oil
sunflowerseeds oil
mustard oil
rice bran oil .
24. VITAMIN E
Deficiency Symptoms
Red blood cell breakage
Nerve damage
Muscular dystrophy .
Toxicity Symptoms
Augments the effect of anti-clotting medication
29. VITAMIN C
Functions
Collagen synthesis (strengthens blood vessels
walls, farms scar tissue, provides matrix for bone
growth)
Antioxidant
Thyroxin synthesis
Amino acid metabolism
Strengthens resistance to infection
Helps in absorption of iron
To help in rapid wound healing by formation of
connective tissues.
30. VITAMIN C
Good Sources :
Citrus fruits (oranges, grapefruits,
tangerines, lemons, lime ),Strawberries and
other berries, cantaloupe and other melons,
papayas, mangoes, and tomatoes.
Rich sources : Amla ,Guava .
Green leafy vegetable :
Cabbage-type vegetables; Dark green
vegetables (such as bell peppers and
broccoli ,spinach .
32. SCURVY
The primary cause of scurvy is insufficient
intake of vitamin C (ascorbic acid). This may
be due to ignorance, famine, anorexia,
restrictive diets (due to allergies, food fads,
etc.), or difficulty orally ingesting foods.
Historically, scurvy was the result of long sea
voyages where sailors did not bring along
enough foods with vitamin C .
33. VITAMIN C
Toxicity Symptoms
Nausea, abdominal cramps, diarrhea
Headache, fatigue, insomnia
Hot flashed, rashes
Interference with medical tests
Aggravation of gout symptoms
Urinary tract problems, kidney stones
34. VITAMIN C
Treatment : 100 mg ascorbic acid twice a
daily and it should be by administered
Intramuscularly for week .
Oral dose should be administered 500 mg
for one month .
36. VITAMIN B1
Function
Part of coenzyme TPP (thiamin pyrophosphate)
used in energy metabolism
It is essential for oxidation of pyruvic acid .
It is essential to maintain the nerves in healthy
condition .
Good Sources
Whole-grain, fortified, or enriched grain
products, legumes,nuts .
Fair sources : fruits , milk , meat , fish.
38. BERI-BERI
Beriberi is a neurological and cardiovascular
disease.
The three major forms of the disorders are
A. Dry beriberi (Muscles wasting )
B. Wet beriberi (cardiovascular
C. Infantile beriberi (malnourisedmother)
39. DRY BERI-BERI
Dry beriberi causes wasting and partial paralysis
resulting from damaged peripheral nerves .
It is characterized by :
Difficulty in walking
Tingling or loss of sensation (numbness) in hands and feet
Loss of tendon reflexes
Loss of muscle function or paralysis of the lower legs
Mental confusion/speech difficulties
Pain
Involuntary eye movements (nystagmus)
Vomiting.
40. WET BERI-BERI
Wet beriberi is associated with mental
confusion, muscular atrophy, edema,
tachycardia, cardiomegaly, and congestive
heart failure in addition to peripheral
neuropathy .
41. VITAMIN B1
Treatment : In adult – (IM) 25 mg thiamine by
daily for one weak .
(orally) 10 mg thiamine by 3 times in a day
(T.D.S) for 1 to 2 month .
43. VITAMIN B2
Function : Part of coenzymes FMN (flavin
mononucleotide) and FAD (flavin adenine
dinucleotide) used in energy metabolism of
carbohydrates,protein and fats
Rich sources : liver,dried yeast , milk powder .
Good sources : milk,eggs,meat,fish, green leafy
vegetables .
Destruction : Easily destroyed by ultraviolet
light and irradiation.
44. VITAMIN B2
Deficiency Disease
Ariboflavinosis
Deficiency Symptoms
Sore throat
Cracks and redness at corners of mouth (cheilosis)
Painful smooth, purplish red tongue (glossitis)
Inflammation characterized by skin lesions covered
with greasy scales
Iron defficiency anaemia
Toxicity Symptoms
None reported
45. VITAMIN B2
Treatment : In adult - 10 mg should given for
a 1-2 months periods .
In children – 05 mg given for a 1 month .
47. VITAMIN B3
Functions
Part of coenzymes NAD (nicotinamide adenine
dinucleotide) and NADP (its phosphate form) used
in energy metabolism of carbohydrates,proteins and
fats .
It is esssential for normal functioning of
skin,intestinal tract and nervous system .
49. VITAMIN B3
Deficiency Disease
Pellagra
Opioids addiction .
Deficiency Symptoms
Diarrhea, abdominal pain, vomiting
Inflamed, swollen, smooth, bright red tongue
(glossitis)
Depression, apathy, fatigue, loss of memory,
headache
Bilateral symmetrical rash on areas exposed to
sunlight
50. PELLAGRA
Pellagra is a disease that affects your digestive
system, skin, and nerves, resulting in
dermatitis, diarrhea, and mental disorders.
The most common cause of pellagra is not
having enough niacin (primary pellagra). Other
causes of pellagra are associated with
digestive disorders that reduce the absorption
of niacin in your body .
At times any of these common symptoms can be
severe :
52. Abdominal cramping
Confused or delusional thinking
Depression
Diarrhea
Difficulty with memory, thinking, talking, comprehension,
writing or reading
Headache
Loss of appetite (Anorexia )
Malaise or lethargy
Mucus membrane inflammation
Nausea with or without vomiting
Skin lesions that are scaly and sore
Weakness (loss of strength)
53. VITAMIN B3
Treatment : 50 mg Niacin given to twice in
daily (BD) for one week by orally .
55. VITAMIN B6
Functions
Part of coenzymes PLP (pyridoxal phosphate) and
PMP (pyridoxamine phosphate) used in metabolism
of amino-acids for maintaining of normal nerve
condition .
Helps convert tryptophan to niacin and to serotonin
Helps to make red blood cells
57. VITAMIN B6
Toxicity Symptoms
Depression, fatigue, irritability, headaches, nerve
damage causing numbness and muscle weakness
leading to an inability to walk and convulsions
Skin lesions ,nausea,vomitting .
59. FOLATE
Function
Part of coenzymes THF (tetrahydrofolate) and
DHF (dihydrofolate) used in DNA synthesis and
therefore important in new cell formation
Activates vitamin B12; Works with vitamin B12 to
form hemoglobin in red blood cells
Helps prevent neural tube defects, such as spina
bifida.
60. FOLATE
Good Sources
Fortified grains
Leafy green vegetables
Legumes, seeds
Liver,broccoli,cereals,pomegranates.
Destruction
Easily destroyed by heat and oxygen
64. VITAMIN B12
Functions
Part of coenzymes methylcobalamin and deoxy
adenosyl cobalamin used in new cell synthesis
Helps to maintain nerve cells
Reforms folate coenzyme
Helps to break down some fatty acids and amino
acids
Promotes to maturation of red blood cells .
It occurs in improve the neurological symptoms of
pernicious anaemia .
66. VITAMIN B7
Other name
Biotin .
Adequate Intake
Adults: 30 µg/day
Functions
Part of coenzyme used in energy metabolism
Part of coenzyme used in fat synthesis, amino acid
metabolism, and glycogen synthesis
Biotin is essential for normal pregnancy and
lactation in experimental animal .
67. VITAMIN B7
Food Sources
Widespread in foods
Liver, egg yolks, soybeans, fish, whole grains
Milk, fruits , soybeans,legumes.
Deficiency Symptoms
Depression, lethargy, numb or tingling sensation in
the arms and legs
Red scaly rash around the eyes, nose, and mouth
Hair loss .
68. VITAMIN B5
02/12/16
Other name
pantothenic acid .
Adequate Intake
Adults: 5 mg/day
Functions
Part of coenzyme A used in energy metabolism of
carbohydrates and fats .
For need of oxidation of pyruvic acid .
71. BURNING FEET SYNDROMES
Burning feet syndrome, also known as
Grierson-Gopalan syndrome, is that causes
severe burning and aching of the feet,
hyperesthesia, and vasomotor changes of the
feet that leads to excessive sweating. It can
even affect the eyes, causing scotoma and
amblyopia. The condition occurs more
frequently in women, and usually manifests
itself when a person is between twenty and
forty years old.
Editor's Notes
Vitamins
Vitamins are essential to life and are required for growth, maintenance and regulation of body processes.
Vitamins
Unlike carbohydrates, proteins and fats, vitamins do not supply energy. However, some vitamins do function as coenzymes in the release of energy from carbohydrates, proteins and fats.
Some vitamins are available from foods in inactive forms known as precursors. Once inside the body, precursors are converted into an active form of the vitamin.
There are 13 different vitamins, each with its own special roles. Vitamins are grouped into two major categories; fat-soluble vitamins and water-soluble vitamins.
Fat-soluble vitamins (4 fat soluble)
Vitamin A
Vitamin D
Vitamin E
Vitamin K
Water-soluble vitamins (9 water soluble: 8 B vitamins & C)
Thiamin
Riboflavin
Niacin
Biotin
Pantothenic acid
Vitamin B6
Folate
Vitamin B12
Vitamin C
Fat soluble vitamins are typically found in the fats and oils of foods. Fat soluble vitamins are absorbed first into the lymph system and then into the blood. Many fat soluble vitamins require protein carriers. Fat soluble vitamins are stored in the body associated with fat. As a result although you need fat-soluble vitamins on a regular basis you usually don't need them on a daily basis. Because fat soluble vitamins are stored deficiencies are slow to develop. In addition, because fat soluble vitamins are stored, toxicities are more likely to occur. Toxicities are primarily due to excessive supplement intake not food intake. Because fat soluble vitamins are stored, many have precursor forms. Body levels of fat soluble vitamins are controlled through fecal excretion.
Water soluble vitamins are found in the watery parts of foods. Water soluble vitamins are absorbed directly into the blood and travel freely in the blood. Water soluble vitamins are not stored in the body. Since water soluble vitamins are not stored you need them on a regular basis, every 1 to 3 days. Because water soluble vitamins are not stored deficiencies develop more rapidly. Toxicities of water soluble vitamins are less likely because water soluble vitamins are not stored; however toxicities can still occur from excessive supplement intake. Water soluble vitamins usually do not have a precursor form. Levels of water soluble vitamins are controlled by urinary excretion.
Consuming vitamins in the right amount is important. Inadequate amounts can cause harm and excessive amounts can cause harm. More is not better. The fact a compound can be essential and harmful is true of most nutrients.
Normally, a well balanced diet based on the USDA Daily Food Plan and a variety of foods will provide enough vitamins. No single food can supply all the nutrients in the right amounts. A variety of foods is needed to have a healthy diet.
Other Names
Retinol
Retinal
Retinoic acid
Precursors are carotenoids such as beta-carotene
Functions
Vision
Maintenance of cornea, epithelial cells, mucous membranes, skin
Bone and tooth growth
Reproduction
Immunity
Food Source
Retinol: fortified milk, cheese, cream, butter, fortified margarine, eggs, liver.
Beta-carotene: spinach and other dark leafy greens; broccoli, deep orange fruits (apricots, cantaloupe) and vegetables (squash, carrots, sweet potatoes, pumpkin)
Deficiency Disease
Hypovitaminosis A
Deficiency Symptoms
Night blindness
Corneal drying (xerosis)
Triangular gray spots on eye (Bitot’s spots)
Softening of the cornea (keratomalacia)
Corneal degeneration and blindness (xerophthalmai)
Impaired immunity
Plugging of hair follicies with keratin, forming white lumps (hyperkeratosis)
Toxicity Disease
Hypervitaminosis A
Chronic Toxicity Symptoms
Increased activity of osteoclasts causing reduced bone density
Liver abnormalities
Birth defects
Acute Toxicity Symptoms
Blurred vision
Nausea, vomiting, vertigo
Headaches, increased pressure inside the skull mimicking a brain tumor
Other Names
Calciferol, 1,25-dihydroxy vitamin D (calcitriol)
The animal version is vitamin D3 or cholecalciferol
The plant version is vitamin D2 or ergocalciferol
Body cholesterol is a precursor
Functions
Mineralization of bones (raises blood calcium and phosphorus by increasing absorption from digestive tract, withdrawing calcium from bones, stimulating retention by kidneys)
Food Sources
Synthesized in the body with the help of sunlight
Fortified milk, margarine, butter, cereals and chocolate mixes
Veal, beef, egg yolk, liver, fatty fish (herring, salmon, sardines) and their oils
Deficiency Diseases
Rickets
Osteomalacia
Rickets in Children Deficiency Symptoms
Inadequate calcification, resulting in misshapen bones (bowing of legs)
Enlargement of ends of long bones (knees, wrists)
Deformities of ribs (bowed, with beads or knobs)
Delayed closing of fontanel, resulting in rapid enlargement of head
Lax muscles resulting in protrusion of abdomen
Muscle spasms
Osteomalacia in Adults Deficiency Symptoms
Loss of calcium resulting in soft, flexible, brittle, and deformed bones
Progressive weakness
Pain in pelvis, lower back and legs
Toxicity Disease
Hypervitaminosis D
Toxicity Symptoms
Elevated blood calcium
Calcification of soft tissues (blood vessels, kidneys, heart, lungs, tissues around joints)
Frequent urination
Function
Synthesis of blood-clotting proteins and bone proteins
Food Sources
Bacterial synthesis in the digestive tract
Milk, Liver
Leafy green vegetables, cabbage-type vegetables
Deficiency Symptoms
Hemorrhaging
Toxicity Symptoms
None known
Functions
Collagen synthesis (strengthens blood vessels walls, farms scar tissue, provides matrix for bone growth)
Antioxidant
Thyroxin synthesis
Amino acid metabolism
Strengthens resistance to infection
Helps in absorption of iron
Food Sources
Citrus fruits (oranges, grapefruits, tangerines, lemons, limes).
Cabbage-type vegetables
Dark green vegetables (such as bell peppers and broccoli)
Strawberries and other berries, cantaloupe and other melons, papayas, mangoes, potatoes, and tomatoes.
Destruction
Easily destroyed by heat and oxygen
Function
Part of coenzyme TPP (thiamin pyrophosphate) used in energy metabolism
Food Sources
Whole-grain, fortified, or enriched grain products
Moderate amounts in all nutritious food
Pork
Destruction
Easily destroyed by heat
Deficiency Disease
Beriberi (wet with edema; dry with muscle wasting)
Deficiency Symptoms (often due to heavy alcohol consumption)
Enlarged heart, cardiac failure
Muscular weakness
Apathy, poor short-term memory, confusion, irritability
Anorexia, weight loss
Toxicity Symptoms
None reported
Function
Part of coenzymes FMN (flavin mononucleotide) and FAD (flavin adenine dinucleotide) used in energy metabolism
Deficiency Disease
Ariboflavinosis
Deficiency Symptoms
Inflamed eyelids and sensitivity to light (photophobia), reddening of cornea
Sore throat
Cracks and redness at corners of mouth (cheilosis)
Painful smooth, purplish red tongue (glossitis)
Inflammation characterized by skin lesions covered with greasy scales
Toxicity Symptoms
None reported
Functions
Part of coenzymes PLP (pyridoxal phosphate) and PMP (pyridoxamine phosphate) used in amino acid and fatty acid metabolism
Helps convert tryptophan to niacin and to serotonin
Helps to make red blood cells
Toxicity Symptoms
Depression, fatigue, irritability, headaches, nerve damage causing numbness and muscle weakness leading to an inability to walk and convulsions
Skin lesions
Function
Part of coenzymes THF (tetrahydrofolate) and DHF (dihydrofolate) used in DNA synthesis and therefore important in new cell formation
Activates vitamin B12; Works with vitamin B12 to form hemoglobin in red blood cells
Helps prevent neural tube defects, such as spina bifida.
Food Sources
Fortified grains
Leafy green vegetables
Legumes, seeds
Liver
Destruction
Easily destroyed by heat and oxygen
Functions
Part of coenzymes methylcobalamin and deoxyadenosylcobalamin used in new cell synthesis
Helps to maintain nerve cells
Reforms folate coenzyme
Helps to break down some fatty acids and amino acids
Deficiency Disease
Pernicious anemia
Deficiency Symptoms
Anemia
Fatigue
Degeneration of peripheral nerves progressing to paralysis
Toxicity Symptoms
None reported
Adequate Intake
Adults: 30 µg/day
Functions
Part of coenzyme used in energy metabolism
Part of coenzyme used in fat synthesis, amino acid metabolism, and glycogen synthesis
Food Sources
Widespread in foods
Liver, egg yolks, soybeans, fish, whole grains
Also produced by GI bacteria
Adequate Intake
Adults: 5 mg/day
Functions
Part of coenzyme A used in energy metabolism