This article is extremely interesting:

Reading it with ATTENTION you can deduce the following implied consequent deductions:

1. The use of 5 reductase alphas does not cause prostate cancer.

2. These drugs lower your PSA.

3. Screening for the early detection of prostate cancer based on PSA is useful and reduces mortality,on the contrary of what widespread and propagated in the last years.

4. It is essential to know all related factors and customize the PSA values on the individual patient. As already 30 years ago said my master Fred Lee, and as reiterates the friend Richard Ablin who found out PSA: the PSA is very important, but you have to know how to interpret CORRECTLY!