The set of practices perceived by a community to be associated with the preservation of health and healthy living.
Questions tagged [hygiene]
90 questions
12
votes
2 answers
Are disposable contacts unsafe beyond their recommended time limits?
My wife is fussing at me because I've been wearing the same pair of 2 week contacts for probably 4 months now. My experience thus far is to only replace if they either tear or develop irritation. The eye doctor I got my prescription from said it can…

Captain Claptrap
- 828
- 5
- 12
12
votes
0 answers
Are objects such as towels, bank notes, carpets, shopping trolleys and light switches dirtier than a toilet seat?
Are objects such as towels, bank notes, carpet, shopping trolleys and light switches listed in blogs such as these and these really dirtier than an average toilet seat since Dr Chuck Gerba, professor of microbiology at the University of Arizona has…

pericles316
- 22,676
- 2
- 84
- 161
12
votes
1 answer
Do restaurants in China recycle 'gutter oil'?
A video titled This Video Of Chinese Street Food Made From 'Gutter Oil' Is The Most Disgusting Thing You Will See All Day rose to the top of the reddit front page today.
It claims some restaurants in China use "gutter oil" - cooking oil that is…

tlehman
- 223
- 1
- 6
11
votes
1 answer
Did Louis Pasteur admit on his deathbed "Bernard [the inventor of terrain theory] was right"?
On many 'health' sites defending terrain theory (the theory that the state of the body, not just germs, is the primal factor for disease development) one finds quotes that Louis Pasteur is said to have admitted that terrain theory was right. Here,…

TheAsh
- 3,006
- 5
- 19
- 41
11
votes
1 answer
Are 40% of the oceans' bacteria killed by viruses every day?
In the March 9, 2018 column of newspaper columnist Cecil Adams' column The Straight Dope, he speaks about the possible benefits of treating bacterial infections with bacteriophages, viruses that infect bacteria, mentioning in passing their…

Robert Columbia
- 3,396
- 3
- 20
- 43
11
votes
0 answers
Are foaming soap dispensers as effective as regular liquid soap dispensers?
I found these foaming soap dispensers on Amazon.
The seller says you can use regular liquid soap, diluted:
Combine 1 part liquid soap with 5 parts water or Fill with foaming soap solution / Castle Liquid Soap.
You use less soap per wash.
Foaming…

user70848
- 380
- 3
- 17
10
votes
1 answer
Are antibacterial soaps better than plain soap and water?
“Consumers may think antibacterial washes are more effective at preventing the spread of germs, but we have no scientific evidence that they are any better than plain soap and water,” said Janet Woodcock, M.D., director of the FDA’s Center for Drug…

GEdgar
- 1,547
- 1
- 11
- 15
10
votes
1 answer
Can the useful lifespan of razor blades be extended by stroking them over jeans?
This article and this video, amongst others, claim that you can extend the useful lifespan of razor blades for a substantial amount (months), if you regularly stroke them over jeans, immediately after using them. Aforementioned article states that…

Decent Dabbler
- 1,454
- 2
- 14
- 25
9
votes
0 answers
Is using saliva as a dive mask defogger dangerous?
When diving, you can use saliva or commercial defog to prevent your mask from fogging. However, according to WikiHow, bacteria in saliva are potentially harmful to your eyes.
Beware of using spit - there are a lot of bugs in saliva that you don't…

Jivlain
- 6,658
- 1
- 37
- 47
9
votes
1 answer
Do "naturally raised" animals contain less bacteria?
Related:
Are artificial hormones in beef really something to worry about?
Does organic food have more vitamins than nonorganic food? (kind of)
I watched Food, Inc. (LINK) perhaps two years ago and recalled a clip from Joel Salatin (wiki), a…

Hendy
- 21,665
- 17
- 116
- 179
9
votes
1 answer
Do handwashs kill 99.9% of bacteria?
My handwash liquid states that it kills 99.9% of bacteria. This usually comes with a disclaimer at the back: "based on laboratory tests".
First of all, if I make a handwash, I would certainly like it to have this attribute too. One way is to lie…

luchonacho
- 254
- 1
- 11
9
votes
1 answer
Does sharing earphones increase the risk of middle ear infections?
A Google search reveals many claims that sharing earphones is unhealthy.
Marie Claire magazine provides an example:
Kelly Reynolds, Ph.D., associate professor of environmental health at the University of Arizona also told Buzzfeed US that 'studies…

Git Gud
- 301
- 1
- 5
9
votes
1 answer
Does taking a bath at night have any bad effects on health?
People in Indonesia and Malaysia claim that taking a bath or a shower at night (probably after 8.p.m.) could cause illness. A few mentioned effects are rheumatism and wet lungs.
Is there any truth to it?

topher
- 203
- 1
- 2
- 5
9
votes
0 answers
Do students on paediatrics rotations get sick a lot?
From http://forums.studentdoctor.net/showthread.php?t=605542:
3rd years get sick on peds alot.
Peds or EM during the winter months pretty much maximizes your odds of getting something.
Do students on paediatrics rotations get sick a lot?
user5582
8
votes
0 answers
Coca-cola and open water swimming
I've heard it claimed that Coke helps prevent infections.
The Independent
Some open-water swimmers drink Coke after racing, both for the sugar
rush and because it is said to neutralise harmful bacteria taken in
with the water that has…

Dave Hillier
- 1,514
- 1
- 14
- 33