Well, if your significant other still has his prostate, pumpkin seeds may help him keep it. There is empirical evidence that eating pumpkin seeds my alleviate prostate complaints including urinating difficulties associated with prostate hyperplasia. Cucurbitin an amino acid in pumpkin seeds kills worms and vermin. Pumpkin seeds are use in Mexico and Central America as a folk remedy to kill tapeworms and other intestinal parasites, perhaps effective in the early stages of schistomiasis and prophylactic to traveler's diarrhea. The active chemistry that may effect the prostate are zinc, essential fatty acids and phytosterols.
Preliminary evidence suggests it does.
Essential fatty acids, or EFAs, are life supporting, we can't live without them. They come from plants and pumpkin seeds like flax seeds are a good source. For folks that get cold sores pumpkin seeds contain lysine. Lysine may help cut the frequency of cold sore infections. Pumpkin seeds are warming, diuretic, rich in vitamins and minerals, especially zinc.