5
votes
Accepted
Is it safe to reboil tap water?
Snopes has covered this.
In summary, there is no risk to boiling the same water more than once. Nothing about the water changes except the temperature. There could be theoretical risks if you ...
- 12.9k
5
votes
How hazardous is a cellular base station-antenna to our health?
While there has been some research showing that exposure to a large amount of non ionizing radiation can be harmful, at this time there is no definitive research showing that this exposure is ...
- 149
4
votes
Accepted
How likely is it to get Leptospirosis from running or walking in an urban setting in rainy days?
Leptospirosis is a bacterial infection spread through contact with animal urine or water and soil contaminated by animal urine.[1]
Rain falling from the sky isn't contaminated by animal urine, so it's ...
- 156
4
votes
Accepted
Why does spot fat reduction doesn't work?
When you do not get enough nutrients from food, your blood glucose levels tend to fall, which triggers the release of the hormone epinephrine (adrenaline). Epinephrine is transported via the blood to ...
- 15.7k
4
votes
How is a beard dirtier than a toilet?
A better comparison than "beard vs toilet" may be "face with beard vs face without beard."
This is actually a reasonable concern in the context of healthcare, where healthcare staff can be a vector ...
- 12.9k
3
votes
Accepted
Effects of exposure to Solar/Lunar eclipse on Human body
NASA has this to say about the effects of eclipses on humans:
There is no evidence that eclipses have any physical effect on humans. However, eclipses have always been capable of producing profound ...
- 1,390
3
votes
Accepted
Does caffeine have any distinct biological effects to adrenaline?
According to a case report about a 24-year old woman (PubMed Central), in agoraphobia, during a panic attack, the sympathetic nervous system is activated, which results in adrenaline release, which ...
- 15.7k
3
votes
What are some conditions that would cause severe exercise intolerance?
If you're looking for a disease with childhood onset that requires exercise restriction, Long QT Syndrome (LQTS) may work, specifically LQT1. Here is a lay overview. For more detail, see this review. ...
- 3,178
3
votes
Accepted
What is the health effect of low indoor humidity?
According to below chart (in which the source from 1986 is also stated) the optimal indoor air humidity for human health is between 40-60%, as close to 50% as possible. The low humidity levels you ...
- 983
2
votes
Clarification on AHA's definition of a "serious" condition
The guidelines for these terms seem purposefully vague; they are meant to maintain patient privacy while releasing a minimum of information for newsworthy cases. The American Hospital Association does ...
- 12.9k
2
votes
Accepted
Calories composition and weight loss
Macronutrient (carbs, proteins, fats) composition of a diet does not have a significant direct effect on weight loss.
Comparison of Weight-Loss Diets with Different Compositions of Fat, Protein, and ...
- 15.7k
2
votes
What are some conditions that would cause severe exercise intolerance?
Here are medical conditions that come to mind, each with different symptoms:
Severe exercise-induced asthma. Symptoms will be severe wheezing, O2 drop, potentially even death. Long-term anti-...
- 345
2
votes
Is being "healthy" an actual, overall provable term? Or is "healthy" just a loose assumption?
Here's the definition of health according to WHO:
Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.
As you can see, there are ...
- 709
2
votes
How to improve joint cartilage thickness
Articular cartilage, which covers the ends of bones in all synovial joints is avascular. Without a blood supply it is unable to heal or regenerate. Over time the loss of this cartilage is what ...
- 1,099
2
votes
Accepted
Health Benefit of Social Nudity - Parasite Reduction?
A bit speculative as this seems to be, given current attitudes in most societies towards nudity, this would be a somewhat promising scenario.
All human infesting lice species are parasites that depend ...
- 6,827
2
votes
Accepted
Health Benefit of Social Nudity - Testicular Torsion Prevention?
Testicular torsion occurs when the spermatic cord to a testicle twists, cutting off the blood supply (a condition called ischemia). The most common symptom is the rapid onset of acute testicular pain ...
- 6,114
1
vote
What is the best pH of drinking water?
The WHO says between 6.5 and 9.5, but mostly due to the pH's effect on operational water-quality parameters. Between 4 and 10.5, apart from possible irritation the effect on humans may not be severe:
...
- 6,722
1
vote
Sleeping and talking and it's effect on vocal chords
It is possible. Voice Disorders are caused by many factors include vocal fatigue which can result from overuse or increases in vocal effort. Vocal effort is a messy thing to define, but it generally ...
- 1,442
Only top scored, non community-wiki answers of a minimum length are eligible