Is reusing water bottles safe?

I started buying bottled water because it seemed to taste better. As an experiment, I tried refilling the empty bottles with tap water and refrigerating them. And I discovered that what I really liked was drinking chilled water out of the bottle. If no one else is using the bottles, how often do I need to wash the bottles out with soap as opposed to just re-filling them?


Is sunscreen necessary for dark skin?

I am African-American, but my skin is not that dark. I was never told that I needed sunscreen and when I worked in a daycare I was told in a very delicate manner that only the paler children needed sunscreen. I've been out in the sun for extended periods of time and was wondering if sunscreen is necessary for someone of my complexion. If so, what strength?


Does being a lightweight drinker have anything to do with my liver?

Does the classification of a "lightweight" with regard to alcohol consumption imply anything about the liver? In particular, is there anything abnormal about feeling tipsy after only one beer (vital stats = 155 lbs., 6 ft.). I know my family has a history of liver problems and I have in the past drank to excess on many occasions. It has never taken much to become inebriated and now it takes even a little less. Should I be worried?


Will starting and stopping the pill increase my risk for cancer?

I have been on the pill for over a year now. Recently, I broke up with my boyfriend of two years. We still see each other, but I have not had sex since we broke up. I don't plan on having sex with anybody else. My question is, if I don't plan on having sex for a long while, should I stop the pill? I am afraid that if I decide to get back on the pill, I will have an increased risk of cancer or something like that. Is this true?


What is proper gym etiquette?

1) When you are at the gym exercising do you need to wipe down each machine that you use even if you are not sweating?

2) I'm looking for some helpful pointers you might have on the subject of health club etiquette (i.e., don't wear perfume because others will leave workout equipment wearing your perfume). I would appreciate anything you have to offer on the subject.


Am I eating good or bad fats?

I know it's necessary to have a certain amount of fat in your diet, but occasionally I hear about "good fat" and "bad fat." What is the difference? Is that the same as saturated/unsaturated? What foods have "good fat"? Can I tell by looking at the nutrition label on a food product which kind of fat I'm eating?


Why do I pull my hair out as a form of self punishment?

Ever since I was in junior high, I have been pulling out my hair. I can remember not being able to pull my hair into a ponytail because the hair at the nape of my neck wouldn't reach. I still have this awful and shameful habit. I don't see it so much as just a habit, like the way one might bite one's nails, it's more like an obsession. I'll just sit and stare into space and pull clumps of hair out of my head. I remember having seen a program on T.V. which dealt with this habit as a medical problem that is curable with medication. Unlike the men and women represented on this program, I am not stripping myself bald — yet. I tend to consider it a form of self-punishment, perhaps. Just to give you some background information, I have a tendency towards bulimia (cycles of bulimia occur when my depression is at its worst) and am in general not a happy camper. What can you tell me about this?