Stomach flu is the illness that causes irritation in the stomach and the intestines. The illness normally does not have to be treated because it disappears by itself after one or two days. Its scientific name is Gastroenteritis. Some of the symptoms associated with stomach flu include diarrhea, headache, fever and vomiting.
The diarrhea and vomiting can cause dehydration. Of all these symptoms, diarrhea is the one most likely to occur. However, vomiting and fever may fail to occur. You may not realize that you have stomach flu until several days later since the symptoms take quite long to appear.

It regulates the normal functioning of the brain and the entire nervous system.
It is responsible for the formation of blood inside the body.
It is also mainly responsible for carrying out the normal metabolic functions of the cell.
The various food products rich in vitamin B12 are as follows:

• Eggs: they are an excellent source of vitamin B12 and eggs derived from goose, hen etc should be consumed
• Cheese: it is liked by many people and also contains ample amount of vitamin B12
• Sea food: it ranges from different types of fish to oysters, lambs to fishes etc
• Beef and lamb are yet another foods containing vitamin B12
• Animal lever is also a rich source of vitamin B12