Why do I faint and have a low pain tolerance?

If I get hurt really sharply or suddenly, I end up passing out. This has happened once when I slammed my finger in a doorway, once when I bashed my elbow on the shower wall, once when my finger was held in an awkward, painful position, and once when I got a flu shot. Why do I pass out like this, and why do I have such low pain tolerance?


Why is my wife losing hair?

My wife has noted that she is recently losing hair at a much greater rate than normal. She feels her hair is significantly thinner (less density of strands) than in the past. What could be the cause of this?


How can I help my friend who's in an abusive relationship?

My best friend is in an abusive relationship! And he knows this! He married his wife about a year ago, when she was 19 and he was 21. And since then, she's verbally abused him, hit him, and even broke down their door once to get to him when he had locked himself in his room. But he refuses to do anything about it, since he "loves her so much." I hate seeing him like this. I'm worried about him. He's been physically hurt by her a lot. And while he can hold his own without getting seriously injured, it's painful to see. He calls me a lot, feeling upset about what she's done... I'm so worried about him.

He's told me he knows she's abusive, and that he wants to take her to marriage counseling... but I know that won't help. I don't want to sound biased, but she's very close minded and I know she won't listen to any counselor. But he "loves her so much" and "doesn't believe in divorce". What can I do to help him?


Is it important to have a primary health care provider?

I've been hearing a lot about having one health care provider follow my medical history, but I'm fairly healthy and don't have a chronic disease. I've been switching from my local doctors when I'm home to the on-campus docs. Is it really that important, given that I'm a healthy individual?