Vitamins are organic compounds that are essential in very small .or shortage of a vitamin may result in a vitamin-deficiency disease. Free radicals are formed not only through metabolic reactions .
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The dehydration is a very common problem seen in elderly individuals. At an elderly age, all the body functions are diminished, which lead to reduction in thirst and body's ability to obtain water. That is why, the elderly people are very susceptible to dehydration.
In order to remain healthy, a person must take 2.5- 4 litres of water per day. In males, the water is required more than females. So, for males, the adequate intake (AI) of water should be in between 3-4 litres per day.
The joining of an egg and a sperm
