At this time, there is no conclusive evidence that frequent ejaculation reduces the risk of prostate cancer. Some studies have suggested that men with a higher frequency of ejaculations may have a slightly lower risk of prostate cancer. However, this difference appears to be very small. Other studies haven't supported this conclusion.
Zombies are sometimes considered the least dangerous hostile mob in the game because they are slow and can only use close-range melee attacks. However, it is possible for several zombies to collaborate and attack as a team, making them more difficult to overcome. Zombies can spawn in two slightly different appearances.
The usual assumption is that none of us is actually a zombie, and that zombies cannot exist in our world. The central question, however, is not whether zombies can exist in our world, but whether they, or a whole zombie world (which is sometimes a more appropriate idea to work with), are possible in some broader sense.