Vitamin C (ascorbic acid)
History of the discovery of vitamin C is associated with scurvy. In those days, the disease is particularly striking seafarers. Strong, courageous sailors were powerless to scurvy, which is also often led to death. The disease is manifested by general weakness, bleeding gums, teeth falling out as a result, there is a rash, bleeding skin. But it was also found a way of healing. So, the sailors, following the example of the Indians began to drink water extract of pine needles, which is a storehouse of vitamin C. In the XVIII century the British navy surgeon John. Lind showed that sailors disease can be cured by adding them to the diet of fresh vegetables and fruits. Still another interesting fact: Albert von Szent-Gyorgyi, the discoverer of vitamin C, in fact, opened up a whole range of vitamins and showed that bioflavonoids and rutin effect of vitamin C is especially powerful.
According to the famous author of "Diet Atkinson"Dr. Robert Atkinson: "Vitamin C has a great importance for our health, I do not even remember the disease, in which the intake of this vitamin will not lead to any improvements. What disease take, whether it is cold or cancer, hypertension or asthma, in all cases can be recommended intake of this vitamin ... ".
Where is Vitamin C
The primary and most well-known source of vitamin C -This, of course, citrus fruits. Other plant sources are: rosehip fruit, green vegetables, currants, tomatoes, cauliflower and potatoes. From animal products rich in vitamin C liver.
On average, 70 by the body must mgvitamin C. But do not forget that every body is different, and that there is an age limit. On the need for vitamin C is influenced by seasonal factors, stress. It was also found that when taking certain medications (e.g., contraception) the need for vitamin C is increased.
The value of vitamin C
Vitamin C and the common cold, infectious diseases
The main function of vitamin C - is strengtheningimmune system. And, first of all, it needs help leukocytes (white blood cells) that consume the stock of vitamin C in the fight against disease. Linus Polling hypothesized that colds can always be cured by taking high doses of vitamin C (1 - 5 grams per day for 1 - 2 days). Studies have shown that vitamin C significantly eases cold symptoms. This action is due to the ability of vitamin C to mobilize the body's immune system. It was also shown that a daily intake of ascorbic acid athletes-runners allows them to completely avoid upper respiratory tract infections, which are the occupational diseases of athletes.
Vitamin C activates the synthesis of interferons -basic anti "tools" of the cell. Especially effective vitamin C in combination with zinc, bioflavonoids, vitamin A, and together they make up the "anti-infective kaolitsiya". Nature itself has created such a powerful duo, these vitamins in plants are also in the complex. Vitamin C reduces intraocular pressure by reducing the risk of developing cataracts.
Vitamin C and joints
Vitamin C is a coenzyme (part of the enzyme)necessary to form the main protein of connective tissue, including bone and cartilage tissue. Normalize metabolic processes in them; It contributes to the prevention of age-related, inflammatory and metabolic lesions of the joints of the limbs and spine.
Vitamin C and cardiovascular disease
It is known that oxidized forms of cholesterolcan be deposited in the walls of blood vessels, forming plaques. Vitamin C in combination with bioflavonoids reduces the level of "bad" cholesterol LDL (low density lipoprotein), and increases the "good" HDL cholesterol protecting vascular wall (high density lipoprotein). Also, vitamin C can regulate blood pressure by providing a hypotensive effect.
Vitamin C and cancer
Vitamin C - one of the basic components of the systemantioxidant protecting the body against cancer, and, moreover, he is recognized as one of the strongest anti-cancer agents include nutrients. Vitamin C prevents nitrates contained in fruits and vegetables. Nitrates are the starting point for the formation of the body's most dangerous carcinogen - nitrosamine. Therefore, doctors recommend taking vitamin C for the prevention of cancer of the stomach and intestines. Furthermore, vitamin C is included in a set period after the treatment of chemotherapy and radiation.
Vitamin C and stress
Scientists have given the palm of vitamin C amongvitamins and other nutrients, as the most effective means to counter the physical and emotional stress. The adrenal glands, which secrete hormones for the organism's response to stress, contain most of ascorbate in comparison with any other part of the body. Vitamin C, also due to its oxidative and antioxidative activity, neutralizes toxins produced during metabolic stress. It is known that one of the causes of mental abnormalities in humans are toxic metabolic products.
Lack of vitamin C
The primary symptoms of lack of vitamin deficiencies in the body, or C are such manifestations:
- reduced mental and physical performance;
- drowsiness, weakness;
- decreased immunity;
- slow recovery from an illness, long-term non-healing scratch wounds.
Signs expressed hypovitaminosis C:
- increased sensitivity to cold, irrational chills;
- fast fatiguability;
- drowsiness or a bad dream;
- decreased appetite;
- depression and irritability;
- pain in the legs and lower back;
Hypovitaminosis (lack) of vitamin C deficiency develops when the vitamin in the diet for 1-3 months, and 3-6 months have developed scurvy.
preperaty vitamin appointed If signs of disease C.
Prevention of hypovitaminosis C It is in regular use in foodproducts containing vitamin C; if it is difficult (for example, in the Far North), it is advisable to use small doses of vitamin C or infusion of rose hips and needles; rosehip syrup take 1 teaspoon.
In case of violation of the drug dosage of vitamin C are possible allergic reactions and the development of signs of hypervitaminosis.
The excess ascorbic acid in the body
There is the so-called principle of "E.Tolerance "Robert Cathcart, according to which the vitamin dose can be increased up until the intestine is able to carry it. We think bring themselves to diarrhea - at least, absurd. What is fraught with hypervitaminosis C?
In persons with a lack of a specific substance(enzyme glucose-6 phosphate dehydrogenase), high doses of vitamin C lead to the destruction of red blood cells, accompanied by the release of hemoglobin from them (hemolysis).
Pregnant women and people with increased blood clotting should be used cautiously large doses of vitamin C.
Patients with diabetes should not eat high doses of vitamin C, due to its effect on insulin the pancreas device.
Recommendations for reception of vitamin C
Divide the daily dose of vitamin C into several doses, as the body quickly consumes vitamin. This maintains a constant high concentration of vitamin C in the blood.
Use vitamin C with meals. Since digestive enzymes increase the absorption of the vitamin and increase its concentration in the blood.
Do not forget that vitamin C is particularly useful in conjunction with bioflavonoids, as well as with minerals (eg magnesium).
- Vitamin C increases the stability of other vitamins that make up the product.