I was wondering about the chemical sodium laureth sulfate. I have received several forwarded e-mails about this causing cancer by a lawyer looking into the matter. This chemical was said to be in many shampoos to create a nice lather, but it's actually a garage cleaner and is a cheap substance for the manufacturer, and in the past, only 1 in 2000 would get cancer from this, and now it's about 1 in 10. I was just curious if it really causes cancer, or is it just a prank? And if it really does cause cancer, what kind of cancer is it? Thank you. I would appreciate an honest answer.

What do you know about the medical uses of acupuncture and acupressure? Have either of these practices been helpful in treating any medical conditions? Thank you for any information you can provide me.

I fell on my roller blades yesterday and skinned my knee. Now I'm watching my knee change and I am fascinated by the healing process. Could you explain to me just what is happening?

A couple of months ago I developed a hard, bony growth on my instep. I noticed that the top of my foot was hurting, and when I took my shoe off, there was a red lump the size of a quarter (it's not red all the time, just from rubbing against the shoe). A friend of mine who is a nurse said that it's probably a ganglion cyst and the best thing to do would be to, and I quote, "hit it with something really hard," like a dictionary, or a hammer. It should break up immediately, she told me. She hasn't seen it, by the way — this was over the phone.

I'm surprised that she thinks it's a cyst, because it's awfully hard — I would have just thought that it was a bone spur. What do you think? And is smacking a cyst with a dictionary really the way to go?

I plan to do some nude sunbathing this summer. What extra precautions should I take with the areas that have never seen the light of day? Should I use a higher SPF on my "naughty parts" than on, say, my arms and legs?

I have a friend who thinks he may have testicular cancer. I am the only person who knows. He is really embarrassed about it and refuses to tell anyone else. But I think his main problem is that he's afraid of what would happen next if it turns out that he did. I'll often tell him that it's not that embarrassing and he can tell his parents, but since I'm a girl, I just don't understand.

I have tried absolutely everything to make him tell someone, anyone really. But he won't. I am truly scared for him and have no idea what I would do without him. What should I do? Thanks for taking the time to read this, I really appreciate it and could really use the help.