The American Cancer Society and The American Heart Association have both made comments pertaining to a recent study on the benefits of fish oil. It has been tried and tested for the past 30 years, with 700,000 patients. Today it was officially stated that fish oil, or more specifically omega-3 fatty acids, does not help in the prevention of cancer. It does have many other health benefits such as reducing the risk of heart disease, boosting brain function, and helping to keeps skin moist.  The 38 studies recently conducted are too heterogeneous, involving different groups, variety of fish oil consumption. More studies need to be considered to claim omega-3 is beneficial in the prevention of cancer.  The American Heart Association recommends at least two servings of fish per week to help prevent heart disease.  The American Cancer Society recommends fish as a protein source as it does not contain high amounts of saturated fats which scientists have mentioned could increase risks for prostate and colon cancer.  So basically keep eating fish, as it can't hurt.