Why is it that when a person vomits, it causes others to vomit — even when they don't have an illness causing it? Is this something triggered by the brain or is it something that happens by reflex (survival instinct) for someone to vomit since, perhaps, what the first person was eating may affect the second who vomits as well?

Does a person's menstrual cycle regulate her bowels in any way? I have had some problems. The week before I get my period, I have loose bowels and the week afterwards I am quite constipated. Is this normal? Is there anything I can do?

I have had Crohn's disease for 16 years and am in remission right now. Recently my boyfriend and I have been toying with the idea of anal sex, but I'm concerned about it given my health issues. I have a lot of thickening of the terminal ileum walls and worry that the "trauma" of anal sex could set off a flare up and be painful because of the narrowing. Any thoughts? I'm way too embarrassed to discuss this with my male doctor. Thanks!

What natural food or herb can help soothe stomach ulcers?

The Internet has lots of false facts on it. I want to know if I should consider all the health/drug/sex/emotional stuff as fact in science/doctor advice, and what areas are not so qualified in knowing. The reason being is I want to be more informed, and I don't like to be mistaken in passing along knowledge that I don't know to be credible or not.

I am young, and I'm switching gynecologists, but I am worried about having a male one. I had a female before and I wasn't as uncomfortable about going. Is there any reason I should be worried?

Is there a service I can employ? I know for a fact that I've never used health insurance to cover anything. I also know that I've been to different hospitals for different issues. Any help is appreciated.

I am transgender, female to male. I have been on hormones for 8 years now, and have gone through pretty much everything except GRS. I haven't gone to the gyno for a few years. I was wondering if I should still get checkups or not?