Question
Why B complex vitamine compounds are essential for us? Describe their important sources.

Answer

Deficiency of vitamin B1 (thiamine) leads to the disease like Beriberi (loss of appetite, retarded growth). So, it is essential for us. Important sources are yeast, milk, green vegetables and cereals. etc....
Deficiency of vitamin B2 (Riboflavin) leads to the cheilosis (fissuring at corners of mouth and lips), digestive disorders and burning sensation of the skin, so it is essential for us. Important sources are milk, egg white, liver and kidney.
Deficiency of vitamin B6(Pyridoxine) leads to convulsions so it is essential for us. Important sources are yeast, milk, egg yolk, cereals and grams
Deficiency of vitamin B12 leads to pernicious anaemia (RBC deficient in haemoglobin), so it is essential for us. Important sources are meat, fish, egg and curd.

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