every study in humans has shown increased insulin resistance, which as you know is not what you want for fatloss or for muscle gain. its also not found in the diet at doses people are recommending, and most of the benefits are from rodent studies which due to the mechanism are really nil.
its proven to greatly increase insulin resistence.
it also can have some negative effects on genetic machinery. it also shows really no benefit at all in human studies that are conducted properly. with so many healthy fats that can aid a bodybuilder this should really be the last one. for fat loss i would recommend fish oil and sesamin for PPAR agonism. they both have good anti inflammatory effect which would help recovery greatly. sesamin seems to be good on the old liver and kidneys too, with renal and hepaprotective properties, another good thing for bodybuilders