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1500 questions
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1 answer

How does LASIK (laser eye surgery) work?

LASIK, or laser eye surgery, is a surgery which reshapes the cornea to correct sight problems (e.g. short sighted, long sighted, astigmatism). Why can laser (which is simply light) reshape the cornea? I'm particularly interested in why the…
kathy
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Can an antipyretic (I.e. Aspirin) lower normal body temperature?

Is it possible for an antipyretic medication taken when not experiencing fever to cause a person's body temperature to drop below normal? I found one article that seems to say yes, but only for large doses (in mg/kg) in mice.
Jim Garrison
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Reversing sleep cycle

I have been a nocturnal for some period of time and thus altering the sleep cycle seems difficult i.e. moving back to the normal 10 to 5 sleep cycle. What can be done to revert back to the normal sleep cycle? Should I need to skip a day of sleep or…
m4n0
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Does keeping different types of medications in one pill bottle affect their quality?

I take a number of different medications and herbal supplements. Because keeping separate containers in my pocketbook is cumbersome, I've been combining them together in the same prescription bottle. I'm wondering if this alters or diminishes their…
Sue Saddest Farewell TGO GL
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Natural ways to stop/delay hairloss?

I'm 28, male, and the hair above my forehead started to fall about 2 years ago and my scalp is finally starting to shine out. I believe this has to do with genetics etc. but still, are there any natural ways to prevent or delay this?
Shimmy Weitzhandler
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What evidence is there for and against Alternate Day Fasting?

I am looking into alternate day fasting (and it's variants such as the 5:2 diet and so forth) the internet is full of opinions and anecdotes and such but I would like to get my hands on some actual studies and facts both for and against if there are…
Matthew Brown aka Lord Matt
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What needs to be exposed for the body to produce Vitamin D?

What parts of the body need to be exposed to sunlight for the body to produce Vitamin D? Some say it's the skin, some say it's the eyes, and some say it's a combination. The most common answer I have received from doctors is that "it's just the…
End Anti-Semitic Hate
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How good, and for how long, can endorphins really make you feel?

It seems to be common knowledge that exercise makes your body produce endorphins that make you feel good, but that is a vague idea. What amount of exercise does one need to have to achieve optimal endorphin production? How intense does it have to…
Gabriel C
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What do blood pressure readings indicate?

I have heard 120 by 80 is considered normal blood pressure. What do these numbers indicate? I am not a science student. Please explain in non-complicated language.
Aquarius_Girl
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Can I hear ultrasounds?

I have noticed that every time I am in the same room as an operating ultrasound machine, I can hear it. And not the machine making noises, but the actual ultrasounds (I know because it decreases in intensity after the gel is added). 'Ultrasound'…
seadoggie01
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Is drinking cold water bad for you?

In general, I like to drink water that I consider cool. However my parents keep forcing me to drink warm (and sometimes hot) water as they said it is better for me. Their reasoning was that cold water would 'freeze' up the fat consumed in my body,…
Bradman175
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How do artificial sweeteners affect weight loss?

One common suggestion when trying to lose weight is to switch from sugary sodas and juices to zero-calorie drinks, such as water and diet soda. Do the artificial sweeteners in diet products affect weight loss? Is there any benefit to choosing "diet"…
Zaralynda
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Are bread molds dangerous to ingest?

I will occasionally notice minor molds developing on bread I've left for a few days at room temperature. Often, there will be some mold noticeable on a few pieces, while other pieces are fine. I know next to nothing about molds in general. Aside…
Nate Barbettini
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Is there a link between bed firmness and spine deformations?

When I was a child, I was diagnosed with spine deformations: scoliosis, kyphosis and lordosis. The scoliosis is the most pronounced one in my case. The professionals (I don't remember if it was the doctor or the rehabilitator who led my medicinal…
rumtscho
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Why does the flu only happen in winter?

I can understand that our immune system may be weaker when we are cold (?), but since these viruses live inside a human body which internal temperature is constant over the year, why does the season make a difference? Moreover, we are never sick…
JulienD
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