One of the main and highly important discussions regarding Omega-3 quality is the issue of contamination by heavy metals, particularly mercury. Fish, the primary source of this oil, may have lived in polluted environments and accumulated mercury or other heavy metals in their bodies. When their oil is extracted and enters the market without sufficient refinement, this very contamination enters the consumer's body. Dr. Maryam Mazaheriyoun, a nutritionist, emphasizes: "People assume that fish Omega-3 is a completely natural and harmless substance, but the reality is that if the product is unrefined, the risk of mercury contamination is completely serious." This contamination not only neutralizes the positive effects of Omega-3 but can also cause damage to the nervous system. Therefore, when purchasing these capsules, one must always ask the pharmacy or read the product label to ensure that it is mercury-free or has been refined to a high standard.
