fferent people eat crayfish differently, some take it as a snack, while some use it as spice for all foods they cook. They are one of the most popular cuisine all around the world and they are categorized as seafood. Crayfish is very beneficial to human health and it can be taken as often as you like. Below are some of the health benefits of crayfish: Weight loss Crayfish serves as a very good ingredient for weight loss because it contains low fats as well as traces of carbohydrates. Crayfish helps in making a healthy and nutritious diet. This seafood can go a long way is serving as salads and green vegetables.