At age 70 I developed a benign enlarged prostate, and my urologist prescribed Avapro, a dutasteride that is an antiandrogen, to reduce testosterone, plus Flomax. I've developed large A small B breasts over several years, without addition of any other drugs. This is a fairly rare side effect of Avodart (about 1/2 of 1%), but it proves that anything is possible at almost any age.