Fish and shellfish are brain food. Nutritionists now are convinced that crayfish and other shellfish like lobster, crab and shrimp, do indeed have the nutrients that stimulate mental energy. Crayfish have a super healthy combination of nutrients from its almost pure form of protein to its healthy amount of omega-3 fatty acids which we now know are among the most beneficial fats we can eat. Crayfish protein has large amounts of the amino acids tyrosine that mentally energizes the brain. These amino acids are supposed to make you think and react better and to be more attentive and motivated and mentally energetic. Could this be the reason why crayfish parties and crawfish festivals are so lively In addition, there is a healthy supply of vitamin d and a as well as calcium and potassium, copper and zinc in crayfish. Iodine is also often mentioned as an important ingredient. Crayfish is a very low carbohydrate food and without 'carbs' you can safely eat crayfish without putting on unwanted weight. These b vitamins are essential for nervous system function, turning the food you eat into energy and keeping your liver, eyes, skin and hair healthy