They may, but not because of their nutrient content. Oysters, by their very
physiology, have the ability to concentrate minerals and heavy metals. This is both an advantage and a potential
risk to human health when oysters are eaten. For example, the essential trace element zinc has its
highest concentration in food for human consumption in the oyster. On the other hand,
cadmium can be very toxic, and it is also found in oysters on occasions. Fortunately, several of these
elements compete with each other for absorption (digestion) from the human gut. So the zinc
in oysters can prevent too much of the cadmium being absorbed.
Oysters can turn you on
Zinc has many functions because it is an important part of a number of key human
enzymes. If a person is zinc deficient, then there will certainly be an improvement in wellbeing when zinc
intake is increased. If zinc intake is already adequate, then more will not be an advantage.
Infertile men may be deficient in zinc although not all infertile men are responsive to zinc
supplements. Zinc cannot be expected to increase libido!
Zinc deficiency is seen with alcohol abuse and so is impotence. Perhaps sometimes the
two are linked The answer is to drink only in moderation.