Health Stack Exchange
Health Stack Exchange

Most Popular

more tags
1500 questions
112
votes
6 answers

How can I protect my eyesight when using computers?

My job requires long periods of computer screen use. I have good eyesight (20/15) and don't wear glasses, but I definitely notice my eyes feeling fatigued at the end of the day. Sometimes when I'm short on sleep, I have trouble focusing or see…
Nate Barbettini
  • 5,107
  • 2
  • 25
  • 55
66
votes
3 answers

What's the best long-term sitting posture?

The received wisdom seems to be that bending forward for prolonged periods of time is bad for the back. Fine. However, the "received wisdom" has been, for a long time now, that sitting bolt upright is the best posture for the back. However, a…
Jez
  • 2,063
  • 3
  • 19
  • 24
52
votes
2 answers

Is there any health risk in cellular phones?

Cellular phones are taking ever increasing part in our lives, and I keep hearing people saying they are harmful to our health. Are there any scientific researches so far proving or disproving those claims? I found couple of semi-scientific…
Shadow Wizard Love Zelda
  • 1,261
  • 9
  • 32
49
votes
1 answer

How many eggs can one eat per day?

I've read conflicting information on how many eggs one can eat per day: Daily Health Post - How Many Eggs a Day Can You Safely Eat? How many eggs a day can you safely eat? Apparently, as many as you want, if you pay attention to your total calorie…
Franck Dernoncourt
  • 10,309
  • 7
  • 40
  • 78
47
votes
2 answers

Is food prepared in a microwave oven less healthy?

There are people who avoid preparing their food in microwave ovens for various health-related reasons. The claims most often stated are: Microwave radiation is harmful. Microwaving destroys vitamins and other nutrients. Is there any scientific…
Patrick Hoefler
  • 1,081
  • 8
  • 19
47
votes
2 answers

Can MRI scans be dangerous for one's health?

Can MRIs have any deleterious effect on one's health? Or would it be safe to have say 5 MRIs per year?
Franck Dernoncourt
  • 10,309
  • 7
  • 40
  • 78
43
votes
1 answer

What are these lines in teeth?

The following tooth cracks are noticeable when a torch is shining on them (without the torch, they aren't visible). Are they serious? How viable are the teeth, and might they need to be replaced with false teeth in the near future? There is no…
Jez
  • 2,063
  • 3
  • 19
  • 24
42
votes
4 answers

Is eating spicy hot (pungent) food (hot chilli & peppers etc.) healthy or harmful?

I love all kinds of pungent food such as chili peppers etc., the hotter the better. I'd like to know, are there any significant dangers or benefits related to consuming them?
Shimmy Weitzhandler
  • 833
  • 10
  • 22
41
votes
3 answers

Do vaccines cause autism?

It seems the question of vaccine harm has been around at least as long as vaccines1. Specifically, the claim that vaccines can cause or contribute to autism has been hotly debated in the last decade. Many claim that there is a dangerous (possibly…
Nate Barbettini
  • 5,107
  • 2
  • 25
  • 55
41
votes
4 answers

Are organic foods healthier than conventional foods?

There is a popular perception, and many marketing claims, that organic produce (and food in general) is healthier than food grown with conventional methods. Most commonly, the reasons given are: less or no pesticide use, lack of synthetic/chemical…
Nate Barbettini
  • 5,107
  • 2
  • 25
  • 55
41
votes
3 answers

Are there any health benefits to male circumcision?

It's been argued by various medical organizations that male circumcision has various medical benefits, such as reducing the risk of catching HIV, or reducing the risk of urinary tract infections, for instance. Are there any respectable scientific…
Jez
  • 2,063
  • 3
  • 19
  • 24
40
votes
2 answers

Is it helpful to a dentist to report pain during a procedure?

Suppose that a dentist is doing a standard dental procedure, e.g. drilling out decay, on me, and I start feeling pain as he does it. Assuming that I can handle the pain silently, so I don't need to report it for my own sake, is it at all helpful to…
Isaac Moses
  • 503
  • 3
  • 8
39
votes
1 answer

What is excess blood from blood donations used for, and do we ever run out?

I regularly donate blood, however, I am curious as to what happens to my blood after I donate. Obviously some of it will go to people in emergency medical situations, as I intend. However, I have never heard of situations where someone died…
dsollen
  • 1,027
  • 1
  • 9
  • 17
38
votes
2 answers

Does the lack of sleep affect my health?

In the past month, I've been really busy with the university and stuff, and I don't sleep as much as I used to. I usually sleep 4-5 hours a night. I haven't been doing that extensively ( I always kept a good sleeping routine), but can the lack of…
Shevliaskovic
  • 1,840
  • 18
  • 24
35
votes
5 answers

Does COVID-19 have a case fatality rate of 41%? Is this formula correct?

According to the data on the Johns Hopkins Coronavirus Tracker, as of 3rd February 2020 there were 17491 confirmed cases of COVID-19 globally, 536 total recoveries and 362 deaths. From my non-expert calculation this implies a mortality rate of: (Nd…
DrMcCleod
  • 532
  • 1
  • 4
  • 14
1
2 3
…
99 100