Can supplements affect birth control effectiveness?

1) Is it true that taking those Emergen-C packets or any other vitamin supplements can effect the effectiveness of your birth control pill?

2) I know antibiotics can lower the effectiveness of birth control, but can probiotics or prebiotics, such as a floral acidophilus FOS, also decrease effectiveness? I've been taking birth control pills for the past 10 years with no scares or baby bumps, and I don't want to wake up pregnant one day because I took a capsule that's supposed to be healthy! :)


How do I get the most out of an all-nighter?

Some roommates of mine and I have been thinking about sleeping lately.

Usually we're all told to get eight to nine hours of sleep, and a lot of the time we do! The problem is, once in a while, when there's an essay to write or exam to study for, I or my friends may end up having no choice but to be up until 6 in the morning. No one's really explained what the best thing is to do if you have to be up.

What would you suggest? Should we eat? Take a quick nap before class, sleep during the afternoon or wait until evening? Any suggestions you have would be great.


What are the effects of staying awake for long periods of time?

1) What are the long-term effects of sleep deprivation?

2) Me and a few friends are planning on doing a fundraiser where we stay awake for five days straight. At first it was a great idea, but I started thinking about if there might be some serious damage to our bodies for staying awake that long. Will there be any long-term or short-term damage for staying awake for five days? If so, is it safer to stay awake for three or four days?

And how long can the body really go without sleep?


Am I the right BMI and weight for my height?

1) A friend and I were discussing this. We both try to stay healthy by eating well (high fiber, low fat, lots of veggies, fruit, etc.) and living an active enough lifestyle (hiking, rock climbing, biking, etc.) that we stay in shape. The question we have, then, is what the current "rules" are for appropriate weight/height ratios? Or are such measurements now thrown out in favor of body fat percentage measurements? She's 5'1" and I'm 6'1" and we're curious what the medical rule of thumb would be for how much each of us "should" weigh...mostly because we're wondering if it takes into account things like muscle mass. What would the current medical/health industry recommend each of us weigh? Are these numbers accepted or are they seen as not as important as they might have been 20 years ago. If you have actual numbers, we'd be curious to see that too. Thanks! I have a dinner riding on this!

2) Could you clarify the Body Mass Index deal? According to one BMI chart, I am "slightly overweight" because I am 5' 5-1/2" tall and weigh 160 lb. I am also very muscular and have a large frame. The lower BMI readings are labeled "ideal," but I've heard muscle weighs more than fat, so if the chart does not include the muscle factor, is it basically saying that it's "ideal" NOT to have extra muscle? I look slender and have never been told by a doctor to lose weight. I'm a twenty-four-year-old female, lacto-ovo-vegetarian, and get lots of exercise, including walking and frequent "sweaty" workouts.


Does wearing ear plugs disrupt the natural ear cleaning process?

I am a very light sleeper so I began wearing ear plugs to be able to sleep uninterruptedly. I moved into a quieter neighborhood now and thought that I would be able to sleep without them but it turns out that my boyfriend is a snorer and so I have to keep wearing them. I know that ears clean themselves out at night but because I'm wearing the ear plugs I have a lot of wax build-up. How can I clean my ears? And also, do you think that prolonged use of ear plugs can cause some kind of damage?


Should I be concerned about BPA from hard plastic water bottles?

I use Nalgene bottles for about 75 percent of the water I drink each day. Therefore, I was startled to find out that there is some possibility that these bottles leach chemicals into the water. I've found conflicting opinions about the veracity of these claims on the Internet. What's the truth? Should I dump my Nalgene for glass? You have an earlier post about bottled water, but it doesn't seem to address this issue specifically, and you recommend purchasing reusable bottles like the ones that might be poisoning me. The bottles I use have #7 on the bottom in the recycle symbol.


Does sweating release toxins?

After practicing yoga in normal temperatures for years, I recently attended a heated yoga class (heated quite hot: 95 to 100 degrees!). The experience left me dizzy, nauseous, and completely enervated. Afterwards, I expressed my concern to the teacher, asking why the studio needed to be so hot. She "explained" that by sweating, supposedly the body releases "toxins" and that my nausea and dizziness must indicate that I need to "detox." Personally, I think I was suffering from heat exhaustion. I've heard this silly explanation more than once, as many people seem to believe toxins are released through sweat. But is that true??? And — next question — doesn't exerting oneself in extremely hot temperatures seem like a recipe for dehydration? Are their any benefits that make it worthwhile, or is all this heated yoga just nonsense?