Our expert says:
Soy products do indeed contain so-called phyto-oestrogens that could potentially affect male sex hormones. However, it has been suggested that this effect is more serious and warrants more attention when an infant uses a soy-based feed. The small body size of infants and the relatively high concentration of phyto-oestrogens in the soy milks, may cause feminisation.
However in an adult man who probably eats a balanced vegetarian diet that also contains plenty of other foods, besides soy, and who has a relatively large body size, the feminising effects of soy intake are probably not a problem. If you hubby should notice gynaecomastia, then it is important to have this condition investigated by a medical doctor.
He should in the meanwhile eat as varied a vegetarian diet as possible.
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