Soy milk is not the best milk to feed growing boys because of the large amount of oestrogen it contains which as you probably know is a female hormone. There is definitive proof that soy milk fed to boys over a long period of time effects their natural hormonal growth.
Dont worry about the small amount of time you have fed your son this, but perhaps think of another alternative to soy. Also soy is a high allergen product, so your son could be having a
mild reaction to the soy milk. Have you tried rice milk? Try and keep food simple. Cut up raw veges, pitta bread and houmous, baked beans or eggs on toast.
If you are still concerned, or he starts to get a temp, take him to your doctor.
at 1:39 AM on Nov. 2, 2009