Free radicals and the damage they can cause to body tissues, if
allowed to go unchecked, are attracting considerable attention
from those scientists investigating the development of diseases
such as cancer and coronary heart disease. Some of the findings
emerging from this work challenge the concept that saturated
fatty acids are central to the development of coronary hear
disease. A feature of the "Free radical hypothesis" is that it
links together, for the first time, previously unconnected
predictors of heart disease risk, tying them in with factors
classically associated with tissue damage, and helps explain
phenomena not explained by the "Lipid hypothesis".

Free radicals are chemically reactive molecules your body has to
handle every day. Some free radicals are necessary for certain
normal metabolic reactions. Here your body supplies enzymes
which control the free radicals so that they don't escape to do
damage elsewhere. Glutathione peroxidase and superoxide
dismutase are two free radical control substances made in the
body. Selenium and Zinc are required for maintenance of the two
respective enzymes. Without such enzymes you would quickly die,
in fact all air breathing life on our planet must have such
enzymes to survive.

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