Senoufou, I have my doubts about that figure of 1 in 4. here's a quote from a reliable looking site: (link later)

"For African-American men, however, the rates [of prostate cancer diagnosis] are much higher, with 158.3 new diagnoses per 100,000 men. In fact, African-American men are twice as likely to die from the disease as white men."

158 divided by 100,000 is .00158. That's about 1.6 percent, not the 25 percent you fear.

I leave it up to you to research how African-Americans may differ from Africans such as your husband.