A standard winter dose for children in the 1950's and rightly so as one teaspoon will support your heart, immune system, eyesight, skin, nervous system and cells
There have been concerns that fish oil may be contaminated with mercury and dioxins (pollutants found in almost all foods). The study below carried out by the Food Standards Agency shows none or very little detectable mercury in fish oil and recommends that fish oil is safe for consumption.
The article below gives a balanced overview of the minimal dangers of dioxins in fish oil being outweighed by the benefits.
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The RDA/RI's below are based on an average adult and the portion size set above