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Do you like Orange Juice?
I do, very much, especially at breakfast.
It is so refreshing, and rich in Vitamin C.
What is Vitamin C?
How is it important to our bodies?
What is Vitamin C?
How is it important to our bodies?
What parts of our bodies need it most?
How is it absorbed?
What if we have too little / much of it?
3 Comments:
-Vitamin C or ascorbic acid is an essential nutrient for humans, in which it functions as a vitamin
-Vitamin C is required for the growth and repair of tissues in all parts of your body. It is necessary to form collagen, an important protein used to make skin, scar tissue, tendons, ligaments, and blood vessels. Vitamin C is essential for the healing of wounds, and for the repair and maintenance of cartilage, bones, and teeth.
Vitamin C is one of many antioxidants. Vitamin E and beta-carotene are two other well-known antioxidants. Antioxidants are nutrients that block some of the damage caused by free radicals, which are by-products that result when our bodies transform food into energy.
The build up of these by-products over time is largely responsible for the aging process and can contribute to the development of various health conditions such as cancer, heart disease, and a host of inflammatory conditions like arthritis. Antioxidants also help reduce the damage to the body caused by toxic chemicals and pollutants such as cigarette smoke.
The body does not manufacture vitamin C on its own, nor does it store it. It is therefore important to include plenty of vitamin C-containing foods in your daily diet.
-Ascorbic acid is absorbed in the body by both active transport and simple diffusion (Vitamin C is not fat-soluble )
-Vitamin C toxicity is very rare, because the body cannot store the vitamin. However, amounts greater than 2,000 mg/day are not recommended because such high doses can lead to stomach upset and diarrhea.
-If you take to much vitamin C, you can overdose, just as you would with a typical drug. This is rare, because vitamin C is water soluble and high amounts will leave the body at a normal rate, but when it does happen, it can cause kidney stones and interfere with vitamin B12 absorption, causing anemia. Diarrhea is also a side effect.
With the higher doses, toxic manifestations were observed in five adults and four infants. The signs and symptoms in adults were nausea, vomiting, diarrhea, flushing of the face, headache, fatigue and disturbed sleep. The main toxic reactions in the infants were skin rashes.
Too little vitamin C can lead to signs and symptoms of deficiency, including:
• Dry and splitting hair
• Gingivitis (inflammation of the gums)
• Bleeding gums
• Rough, dry, scaly skin
• Decreased wound-healing rate
• Easy bruising
• Nosebleeds
• Weakened tooth enamel
• Swollen and painful joints
• Anemia
• Decreased ability to fight infection
• Possible weight gain because of slowed metabolism
• Scurvy
(Scurvy is an avitaminosis resulting from lack of vitamin C, since without this vitamin, the synthesised collagen is too unstable to perform its function. Scurvy leads to the formation of liver spots on the skin, spongy gums, and bleeding from all mucous membranes. The spots are most abundant on the thighs and legs, and a person with the ailment looks pale, feels depressed, and is partially immobilized. In advanced scurvy there are open, suppurating wounds and loss of teeth and, eventually, death. )
The human body can store only a certain amount of vitamin C,[37] and so the body soon depletes itself if fresh supplies are not consumed.
-It has been shown that smokers who have diets poor in vitamin C are at a higher risk of lung-borne diseases than those smokers who have higher concentrations of vitamin C in the blood.
(Mr Toan, I think that you wanted us to give you common infomation about vitamin C,but I found very much information of it in internet and my textbook, and I didn't sure if it is common or not)
Mai Anh,
1. Excellent. Thanks so much.
2. The way in which the information was selected for posting is good, too, professionally speaking.
3. Yes. The provided information is quite common, at least that is what it sounds to me.
4. What did you mean by "didn't sure", by the way?
oh, this is my stupid mistake. I was careless.
You encouraged me so much, thanks a lot. I'll try my best. :D
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