Dr. Umar Aitsaam

This study ranks 51 seafood varieties’ mercury contributions, revealing tuna as the dominant source and highlighting gaps in U.S. consumer guidance. It proposes a six-tier mercury categorization to inform certification and risk communication.

Analysis of mercury concentrations in canned and fresh fish, and human hair in Port Moresby, reveals mostly safe levels, with occasional exceedances in tuna. Mackerel, the primary local canned fish, remains within safety limits, supporting its certification for safe consumption.

This study links heavy metal bioaccumulation in gluten-free diet followers to increased blood and urine levels of mercury, lead, cadmium, and arsenic, highlighting the need for targeted regulation and certification in gluten-free products.

This study shows that excess-water rice cooking methods lower arsenic content but also significantly reduce essential micronutrients, raising concerns for heavy metal certification and nutrition, especially in populations dependent on rice.

This study found that arsenic testing promotions in private well communities boost testing rates, but primarily among high-income, educated households. Free testing improves participation but does not eliminate socioeconomic disparities, indicating the need for targeted, policy-driven approaches for equitable heavy metal certification.

EPA dust-lead action levels now set clearance at 5/40/100 µg/ft² and treat any reportable dust lead as a hazard, reshaping HTMC compliance.

This study on Cordyceps sinensis shows bioaccessibility-based risk assessment is essential for accurate heavy metal regulation, with minimal health risks detected, even for arsenic.

This pooled international study found that even blood lead levels well below 10 µg/dL are associated with significant, dose-dependent intellectual deficits in children, suggesting there is no safe threshold for lead exposure and underscoring the need for stricter regulatory limits.

This review analyzes cadmium and lead in cocoa and chocolate, highlighting sources, geographic patterns, regulatory limits, and mitigation strategies, providing critical insights for heavy metal certification programs and international trade compliance.

The impact of drinking water, indoor dust and paint on blood lead levels was assessed in 306 Montréal children. Even low-level lead in water and windowsill dust significantly raised BLLs, emphasizing the need for comprehensive testing in heavy metal certification programs.