Expert: Dana Krempels, Ph.D. - 12/8/2008

Question
there are people who eat  enough fruits which provides vitamin c (7fruits) but still show serious signs of itching.because i thought vit c is the basic nutrient which boast the immune system.so why the itching.does it mean it has provoked the itching filaria or it takes time to boast the immune system.or has it boasted the immune system and it is now fighting against the disease which causes intense itch.please does sugary or sweetened food promotes the rate of the filaria itching or not.because i head rumours abt that please give me its details.for sugar is also an important source of energy .thanks

Answer
Dear Pascal,

Filariasis is the term used to describe an infestation by parasitic nematodes (roundworms, or filaria), tiny worms that inhabit the blood and lymphatic tissues as adults.  This has nothing to do with vitamin C, though it is a very serious problem.  If you have filariasis, vitamin C is not the answer; you need to see a physician for appropriate treatment.  Diet should not affect the intensity of itching from the parasites, and vitamin C will not cure the problem.

Excessive vitamin C can sometimes cause an itchy rash, but it would be nearly impossible to get sufficient vitamin C from fresh food to get that high a dose.  In cases like this, people have taken too many tablet supplements--not overeaten foods with vitamin C in them.

Vitamin C does not contain sugar, nor is it a source of energy.  It is a coenzyme necessary for the body to perform many different metabolic reactions and maintain body repair and healthy immunity.  But it is only one bit player in a very complex system.

I hope this helps clear things up.

Dana