C vitamin is probably the most known vitamin around the world. It is a water-soluble, non-B-complex vitamin. As chemical structure, C vitamin is a weak acid, called ascorbic acid.As all the water-soluble vitamins, C vitamin can not be deposite in to the body, and it is needed to be consumed every day.The daily necessary for bought men and woman's are around 60 mg C vitamin per day.Because C vitamin eliminate from the body in 12 hours, the C vitamin sources have to be consummated so that the body always have the necessary of C vitamin.
Persons that are suffering from AIDS, cancer, fever, alcoholism or other chronic diseases need larger amount of C vitamin, up to 1 gram per day.

    Only humans and some few animals don't have the capacity of synthesize C vitamin in they own bodies. The others animals and plants have this capacity of synthesize. C vitamin can be found in all vegetables or fruits, like orange, broccoli, cabbage, tangerine, potatoes and many other aliments. The Indian gooseberry is one of the richest fruit in C vitamin. It contains 30 times more C vitamin than it is found in orange.As some of the fat-soluble vitamins, C vitamin has also an antioxidant role. By its antioxidant role, C vitamin is fighting against the free radical oxygen, the ones responsible for causing the oxidative stress. This is why, smokers that are more expose to the oxidative stress, that can deplete the C vitamins from the body, needs to take vitamin C supplements.

    Also alcoholics that are taking C vitamin supplements have lower risk of developing liver damage, because C vitamin helps alcohol decompose faster.Persons with asthma, usually after a contact with an allergen, have an asthma attack, leading to higher histamine levels in the body. C vitamin reduce the histamine level from the body, leading to a less sever asthma attack.C vitamin also participates in collagen forming, the protein that is forming the structure of the bones, has effects over the blood vessels or muscles, participate in neuromediators synthesis, like dopamine, noradrenalin and adrenalin, helps iron absorption.

    Also is involved in transferring the energy to cell mitochondria, trough carnitine, by participating at carnitine synthesis. The effect over the blood vessels manifests trough protecting the nitric oxide levels from the body. The main effect of nitric oxide is to relax the blood vessels walls, leading to a control blood pressure or lowering it. This is scientifically proved by studies that have been made in peoples with high blood pressure and taking C vitamin supplements and people that didn't take C vitamin supplements. At the end of the research, in people with C vitamin supplements, the blood pressure was lower with 5-10 percents.

    The lack of C vitamin causes a disease called scurvy. It is characterized by loss of teeth, bleeding under the skin, depression, fragility of blood vessels, mild anemia or poor healing.
If C vitamin is not replaced, in short time, can appear an internal massive hemorrhaging, that can lead to death.Chronic scurvy has less manifested symptom like acute scurvy.It is characterized trough some micro lesions of tissue. If blood vessels are affected, this may be a factor of cardio-vascular disease.The negative effects of C vitamin are diarrhea, nausea or kidney stones.These effects appear different at each person, depending of the tolerance limit of each body. The tolerance limit is a level that shows who much C vitamin a person can ingest without any side effects. It can be differences between healthy persons and the ills one, because of the immune system that reacts different in ill persons and healthy ones.

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