No, a vasectomy is not associated with prostate cancer.

It is interesting to quote that the UV rays work in an inverse relation with prostate cancer. More exposure to the sun means more UV rays, which in turn increases vitamin D in the body. Vitamin D is a very important shield against prostate cancers. Men living in those countries which have minimal sun exposure are most prone to prostate cancers(1).

There is very weak evidence that prostate cancer is related to exposure to chemical toxins. However, farmers who are more exposed to pesticides and a high-fat diet are prone to prostate cancers(2).

Five reasons can be blamed for little awareness about prostate cancer:

1. Investment money to investigate prostate cancer is not sufficient.
2. It takes decades to grow in the body of a male, and most studies are short-term. 
3. There are many variants of this disease, and the symptoms/outcomes are different from person to person.
4. Medical professionals have a poor understanding of prostate cancer.
5. The research data is biased and insufficient.

That is why man cave health is raising funds for awareness about prostate cancer on very basic community levels. We have high hopes that one day, we will be in a very stable position to address all these key factors which are behind the awareness-lag of prostate cancer(3).

All men are at high risk of developing prostate cancer at some point in their lives. However, it is mostly detected in older men. Young people are also not safe. 

Absolutely not; researchers suggest that the people living in the USA, especially in The Northwest, The Rocky Mountain States, and other potential states, are at high risks of developing prostate cancer.

Yes, every male is at risk of developing prostate cancer, whether it is your son, nephew, or brother. Routine annual PSA exams and healthy dietary habits can prevent the unfortunate event of developing prostate cancer.

Yes, your risks of developing prostate cancer are increased. Even the odds of developing prostate cancer at a younger age are increased for you.

References

1. Ness RA, Miller DD, Wei L. The role of vitamin D in cancer prevention. Chinese journal of natural medicines. 2015;13(7):481-97.

2. Shephard RJ. Physical activity and prostate cancer: an updated review. Sports Medicine. 2017;47(6):1055-73.

3. Ogundele SO, Ikuerowo SO. A survey of the awareness of prostate cancer and its screening among men attending the outpatient clinics of a tertiary health center in Lagos, Nigeria. Nigerian Journal of Surgery. 2015;21(2):115-8.