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Normal daily need vitamin C50-100 mg, vitamin A2500-3000 international units, vitamin D300-400 international units. 

Vitamins are human nutrition, the need to grow organic compounds. The body if lack of vitamin, can appear some kind of disease. So some people think that vitamins are nutrients, intake is "the more the better." People need vitamin the more the better? The answer is no. Reasonable nutrition, the key is that "moderate". Excessive intake or lack of certain vitamins, no harmful to the body not only instead.

1. The lack of vitamin A

Dry eye photophobia, many tears, blurred vision, dry skin coarse person should take more carrots, animal liver, egg, milk, etc.; Often watch TV and the more cardiovascular disease patients is edible.

2. Lack of vitamin B1

Thumbs and pins and needles, look not beautiful, indigestion, with multiple neuropathy and beriberi, who should be eating more brown rice, red bean, tomatoes, peanuts an ... Read more »