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?


Why are my wounds healing more slowly?

I have noticed lately that wounds such as cuts are healing much more slowly than before. I have also noticed that I am scarring more. For example, a tiny hole in my hand has developed a scar that is four times the size of the actual injury, and it is slightly raised. Am I missing something in my diet that is causing this? Or could it be an effect from on-going stress and anxiety? I am a vegetarian with some vegan tendencies, and I take a multi-vitamin every day or so.


Why does my boyfriend have difficulty orgasming with a condom?

After being on birth control pills for the past two-and-a-half years, I stopped taking them because of side-effects. Since going off the pill, my boyfriend and I have been using condoms with an additional spermicide. The problem is that he is having a difficult time having an orgasm. He says that the condoms do not provide him with enough stimulation to be able to ejaculate. As a result of this dilemma, our sex life has become almost non-existent.

Could it be the type of condoms that we are using? We're using latex condoms. What can we do? Our sex life is riding on this!


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?