The current theory is that it was caused by an enormous meteor that struck just off the coast of Mexico. Low cholesterol diets may be dangerous. Scientists have found that monkeys placed on a low cholesterol diet become very aggressive. The body may regard a low cholesterol diet as a sign of scarce resources. It's not clear that mammograms are worthwhile for women under fifty.
Young women have denser breasts, which makes their x-rays very hard to read.
There is a Gallup poll here that says men are more supportive of abortion rights than women. That makes sense to me. As long as women have the option of an abortion men don't have to take responsibility for getting a woman pregant. Spiders often eat part of their web. It doesn't have much nutritional value, but webs are actually very effective at trapping moisture, so scientists think spiders do this as a way of gettting enough to drink.