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Beef is the meat of domestic cows and is used for meals worldwide. It is used in America, Europe, Australia, and Southeast and East Asia cuisine. Cattle have been domesticated since 8000 BC. People in this period did this domestication of cattle because of leather, milk and beef. Cattle are used in ancient world for production of meat, milk production, drafting oxen, and for many other purposes. Spanish conquistadors invaded central and South America and they brought cattle in these areas. Nowadays, people eat beef all around world. Beef contains high levels of dienole linoleic acid (CLA). CLA is polyunsaturated fat. This acid slows growth of cancers of skin, breasts and stomach. University researches are done on laboratory mice and rats. Also, CLA can help you in preventing of diabetes II. People with diabetes II do not depend on insulin.

The health benefits of beef are following:If you eat organic beef you will be provided with zinc or selenium. Selenium is needed because contains antioxidant called glutathione peroxidase which is good for treatment of rheumatoid arthritis and asthma.

Also, lean beef is rich in zinc. Zinc is good for blood vessels. It can help you to prevent diseases such as atherosclerosis. Zinc provides proper functioning of immune system. Zinc also heals wounds.

Beef contains high levels of protein. Only four ounces can get you 64% of daily needs of protein. It is important to eat lean beef if you want this amount of protein intake. Protein is needed for muscles building up and for strong muscles.

Beef is rich in vitamin B6 and vitamin B12. B6 is important vitamin because converts homocysteine to be benign. Homocysteine can be very dangerous chemical. Vitamin B12 can help you to prevent colon cancer but only if you eat low-fat foods rich in this vitamin.Beef of cow which is fed with grass has high levels of omega 3 fatty acids. Omega 3 fatty acids can help you to prevent heart disease. These acids do not raise levels of bad cholesterol (LDL) and also levels of total blood cholesterol.

You eat 3 ounces of organic lean beef and you will be provided with B-complex vitamins, zinc and protein. Beef contains high levels of iron and phosphorus. Iron is needed for carrying oxygen to blood cells and muscles and for preventing fatigue. Phosphorus is good for strong bones and teeth.

There are some cautions you need to take if you eat beef such as:You have to cook beef properly because beef can have viruses and bacteria.Beef has saturated fats and cholesterol and they can increase risk of heart disease.People give to cattle antibiotics due to heal its infections. Persons who are allergic to antibiotics should not eat beef of cows treated with antibiotics.

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