Mercury

Mercury is a heavy metal which is toxic especially if its vapors are inhaled. The liquid form is not readily absorbed by the body and is usually excreted.

Methylmercury is a highly toxic form of mercury which has an ability to bind with organic molecules and is easily absorbed by the living tissue and accumulates in the body for many years.

Most of the mercury in fish and seafood exists in the form of methylmercury. Depending on the studies it accounts for around 90% of total mercury depending on the species and water sources. (1)Sunderland EM. Mercury Exposure from Domestic and Imported Estuarine and Marine Fish in the U.S. Seafood Market Environ Health Perspect. 2007 Feb; 115(2): 235–242. Available here. (read more..)

Methylmercury accumulates in the body and has the half-life of 1.5 months. (2)World Health Organization. Global Vaccine Safety. Available here.
The current safe daily limit for methylmercury intake has been established to be 0.1 micrograms per kg of body weight. (3)United States Environmental Protection Agency. How People are Exposed to Mercury. Available here.

References   [ + ]

1. Sunderland EM. Mercury Exposure from Domestic and Imported Estuarine and Marine Fish in the U.S. Seafood Market Environ Health Perspect. 2007 Feb; 115(2): 235–242. Available here.
2. World Health Organization. Global Vaccine Safety. Available here.
3. United States Environmental Protection Agency. How People are Exposed to Mercury. Available here.

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