Vitamin C is a very important part of our diet. It is found in fruit and fresh vegetable -they have to be fresh because cooking the vegetables destroys the vitamin C.
The reason that they are so important is because they help to keep membranes healthy, as well as keeping our tissues linked together.
(The part you may be interested in is in bold)
If you do not obtain vitamin C in your diet, there are a number of deficiency diseases which can be gotten. Some examples are scurvy, bleeding from small blood vessels in the gums and it could take a long time for wounds to heal.
The early signs of Vitamin C deficiency includes weakness, swollen gums and nosebleeds. The first thing one can do to get rid of the symptoms is to take Vitamin C supplement.
Two notable signs are the gums bleeding easily around the teeth and capillaries under the skin breaking spontaneously producing hemorrhages.
Bleeding gums
anemia
The first sign of Vitamin A deficiency is night blindness. Severe Vitamin A deficiency can cause Xerophthalmia (dry eye in which the eyes cannot produce tears) and complete blindness.
no vitamin causes bleed gum it is the deficiency sign that causes bleeding gum..
Marks on fingernails usually indicate a vitamin deficiency and are not a sign of cancer.
The most common symptom of vitamin A deficiency is impaired vision. Vitamin A deficiency can cause blindness, night blindness and also failure to produce tears. Vitamin C deficiency causes Rickets ( impaired growth, weakening of bones) osteomalacia in adults ie. softening of bones , bending of spine etc.
Vitamin deficiencies, including vitamin B12, D, E and K, have been associated with dark circles.
Vitamin A deficiency is a lack of vitamin A in humans. It is common in developing countries but rarely seen in developed countries. Night blindness is one of the first signs of vitamin A deficiency. Xerophthalmia and complete blindness can also occur since Vitamin A has a major role in phototransduction. Approximately 250,000 to 500,000 malnourished children in the developing world go blind each year from a deficiency of vitamin A, approximately half of which die within a year of becoming blind. The United Nations Special Session on Children in 2002 set the elimination of vitamin A deficiency by 2010. The prevalence of night blindness due to vitamin A deficiency is also high among pregnant women in many developing countries. Vitamin A deficiency also contributes to maternal mortality and other poor outcomes in pregnancy and lactation.[1][2][3][4]Vitamin A deficiency also diminishes the ability to fight infections. In countries where children are notimmunized, infectious disease like measles have higher fatality rates. As elucidated by Dr. Alfred Sommer, even mild, subclinical deficiency can also be a problem, as it may increase children's risk of developing respiratory and diarrheal infections, decrease growth rate, slow bone development, and decrease likelihood of survival from serious illness.Vitamin A deficiency is estimated to affect approximately one third of children under the age of five around the world.[5] It is estimated to claim the lives of 670,000 children under five annually.[6]Approximately 250,000-500,000 children in developing countries become blind each year owing to vitamin A deficiency, with the highest prevalence in Southeast Asia and Africa. According to the World Health Organization (WHO), vitamin A deficiency is under control in the United States, but in developing countries vitamin A deficiency is a significant concern.
Vitamin E deficiency is a very rare problem that results in damage to nerves.When vitamin E deficiency does occur, it strikes people with diseases that prevent the absorption of dietary fats and fat-soluble nutrients
If you mean, why do dogs eat feces/poop?"The answer can be as simple as the dog not getting the food it needs. It can also be a sign of a vitamin/hormone deficiency. If a dog is eating it's own feces it should be stopped and your Veterinarian should be notified of the behavior and testing done to see if the dog has any type of hormone/vitamin deficiency.
It depends on how long the feathers are out for, if they are not growing back in at least a month, it could be a sign of deficiency in vitamins. But it is normal when feathers fall out because every bird goes through a developing cycle called the molt.
Blindness, maternal mortality, compromised immune system. The first sign is usually night blindness which becomes permanent blindness. 250,000 to 500,000 children in developing countries go blind each year because of vitamin A deficiency.
Iron deficiency can be a sign of a more serious problem, such as internal bleeding so it is important to get a thorough evaluation from a physician.