Nutritional composition of Prawns:

Selenium:
Prawns are rich source of Selenium which helps to prevent the growth of cancer cells in the body thus it helps in preventing cancers in the body.
Fatty Acids:
Prawns are a rich source of Omega 3 Fatty acids which is very good for heart. It helps in widening of lumen of the arties by removing bad cholesterol from the inner walls of the arteries. Thus it helps in reducing the blood pressure which in fact makes the heart work less and helps in circulation. Fatty acids are also helpful in fighting against diseases like Dementia and Alzheimer’s disease. Also it is very good for the liver too.
Calcium:
Since prawns are very rich source of calcium it is thus very good for teeth and bones.
Vitamin E:
Vitamin E is found in good quantities in Prawns so it is very good for the skin as Vitamin E is used not only in treating various skin diseases but also gives a glow to the skin.
Vitamin B12:
Prawns are rich source of Vitamin B 12. B 12 is very useful not only in keeping memory sharp but also is very good for cardiac health and also is needed by arteries and veins to work properly.
Proteins:
Proteins are the building blocks of the body. Body required proteins not only to be healthy but also to repair any damage that has been done to the body like an injury or regular day to day repair.
Calories:
Prawns have very less calories as compared to most other meats and thus are very good for keeping the calorie count down and lose weight.
Astaxanthin:
Prawns are an unusually concentrated source of the antioxidant and anti-inflammatory nutrient called astaxanthin.  Release of inflammatory messaging molecules (like tumor necrosis factor alpha and interleukin 1B) is suppressed by astaxanthin, and so is unwanted oxidation of fats in immune cells. In animal studies, risk of colon cancer is lowered by intake of astaxanthin, and immune-related problems of diabetes are also reduced.