And in humans, it can cause heart and cognitive problems. Mercury in fish hails from natural sources but also from pollution. Even more troubling, his mercury levels rose. His results: Although blood tests showed his omega 3 fatty acids were about double for the average American, his blood pressure, triglycerides and cholesterol were about the same as when he started his experiment. Greenberg says half of the world’s seafood supply is now farmed, and his year-long diet consisted of 50 percent farmed fish. As aquaculture rises to address the problem, the quest for forage fish increases as well. Overfishing plagues oceans around the world as demand for seafood skyrockets. Greenberg raises questions about the impacts of these practices on the oceans. As the harvest of forage fish for farm animal and aquaculture industries grow, forage species are under increasing commercial pressure, and in some parts of the world, overfishing has caused forage fish populations to plummet. At the same time, forage fish are also used to make products such as fertilizer, cosmetics, and fish meal for aquaculture and animal feed. Some health experts believe omegas are the way to a healthy heart, flexible joints, and a sharp mind, although Greenberg points out that no studies are conclusive.įish oil supplements are made from forage fish: small, schooling fish such as menhaden, anchovy, and sardines that play a crucial role in marine food webs because they serve as the primary food source for a wide range of marine predators including marine mammals, seabirds, and larger fish. While Greenberg went right to the source for this nutritional boost, fish oil pills are the third-largest-selling supplement in the United States and a $34 billion-a-year global industry. Author Paul Greenberg shares his discoveries about sustainable seafood, ocean food webs and the health benefits of omega-3 fatty acidsīy Leah Baumwell, International Game Fish AssociationĬould you handle eating fish at every meal for a year? That’s what award-winning author Paul Greenberg did for a research project that lead him around the world to analyze the science, business and future of seafood’s health promises.įacing elevated blood pressure and high cholesterol, the middle-aged New York City resident decided to load up on seafood to raise his omega-3 levels and see if he could improve his conditions.
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