Recomendation
Buy capsules from a reputable manufacturer that you
trust. It is important that supplement makers test and
process the oil properly to remove potential toxins.
A survey of some brands sold in Asia found some contained
dangerously high levels of PCBs, cancer-causing pollutants
that can accumulate in the bodies of sharks and other
fish. Shark oil can also be high in mercury, a poisonous
metallic element that can cause serious health problems
when ingested at almost any dose.
Avoid ingesting high doses
of pure squalene, one the ingredients in shark liver
oil. Although it is a natural substance and is also
found in vegetable oils, there have been isolated reports
of pneumonia and immune-system cancers among fisherman
and others exposed to high amounts of the substance.
So while pure squalene is safely added to moisturizers
and vaccines, and may have an array of beneficial effects,
it’s best to avoid high doses of the pure ingredient.
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