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22 votes
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Does hot water kill germs better than cold water?

Surprisingly, no. Hot water does kill bacteria, but what's comfortable for your hands is also pretty comfortable for bacteria. Most pathogens start to die off around 60°C to 70°C (140°F to 158°F)1, ...
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17 votes

Is drinking water during or after a meal better?

Remember not to drink too soon before or after a meal as the water will dilute the digestive juices While that claim might sound reasonable at first, I doubt this has any effect you need to consider ...
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  • 6,998
13 votes

Daily how much water intake is needed?

This answer is based on normal situations (examples of an abnormal situations include patrolling in high temperatures in full protective gear, and strenuous exercise, especially in heat/cold) and ...
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12 votes
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how it's better to drink water, fast or slowly?

I don't see a lot of difference between drinking few sips and 1 cup (8 oz, 237 mL) of water at once. If you drink a large amount of water at once, for example, 500 mL (2 cups, 16 oz), all this water ...
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11 votes
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What are the health risks of consuming 6-8 liters (1.5-2 gallons) of water daily?

Summary The primary risk of excessive water intake is hyponatremia (low sodium level in the blood). While a healthy person who drinks 6-8 liters of water daily is unlikely to suffer significant ...
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  • 4,355
9 votes
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Why is it a bad idea to re-heat drinking water?

Water isn't pure H2O; there are all kinds of dissolved substances in it: minerals, chemicals, etc. This is why scientists use only distilled water in experiments (often twice-distilled). Some ...
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9 votes
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Water vs. Coffee when hungry at work

Short answer: A pack of raisins. Yes, I've read your question through and through. Please, bear with me for a while, to see the longer answer: The problem with concentration when you haven't eaten ...
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  • 2,823
8 votes
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Is it safe to drink urine when you have nothing else to drink?

If you are in a no-other-liquid situation then not, it's not safe to drink. The problem is that your urine is a way to remove superfluous minerals and other stuff from the body. The body's job, ...
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  • 2,770
8 votes

Is "water weight" a real thing?

It sounds like what you're talking about is related to water retention, a specialized case of fluid retention, which causes an effect known as edema. Edema (and thus generalized fluid retention) can ...
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  • 1,838
7 votes
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How often should you drink water? Not how much

Referring to published research, there is no known quota on drinking frequency since fluid intake from beverages and food in time period takes care of the total hydration status of an individual in a ...
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6 votes

Which one is more harmful for your kidneys, drinking more or less water?

Background reading Even though your fluid intake can be highly variable, the total volume of fluid in your body normally remains stable. Homeostasis of body fluid volume depends in large part on the ...
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6 votes
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Can drinking ultra-pure water be dangerous?

ACUTE effects of drinking distilled water The idea behind the myth that distilled water is harmful is that its low osmolality ("tonicity") could dangerously decrease the blood osmolality, which is ...
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5 votes
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When should I drink from the sea?

In the attempt to prevent or treat dehydration you should not drink sea water. In short: By drinking seawater you ingest excessive amount of sodium chloride, which needs to be excreted by urine in ...
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5 votes

How much water is too much?

Water intoxication is possible; it seems that realistic danger starts when you (as an adult) drink 2 liters or more water per hour for several hours in a row. In small children this amount is ...
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5 votes
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Is drinking cold water bad for you?

1. Freezing cold (4 °C) beverages do not increase the secretion of the gastric acid more than lukewarm or hot beverages, according to this study: McArthur KE et al, Gastric acid secretion, gastrin ...
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5 votes
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Not taking bath or shower when sick

Is there any evidence that taking a bath or shower when sick has negative effects? This is quite interesting because I've heard MANY patients with this same belief. Some people believe that bathing ...
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5 votes
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What is the difference between soda water and water?

Chemically speaking, carbonated water is just plain water with carbon dioxide dissolved in it under high pressure. It hydrates just as well as normal water, because it still contains plain H2O. ...
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  • 6,574
5 votes
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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 ...
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  • 12k
4 votes

What is the best way to obtain pure drinking water in the U S?

Mineral water from a glass bottle can have a good taste, is clean and does not contain fluoride (or far less than tap water). It is sodium in mineral water that is most responsible for its (good) ...
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  • 15.6k
4 votes
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Does drinking water more than 10 liters per day has any benefit or side effect?

Drinking the appropriate amount of water is okay, but when it becomes excessive, then it could lead to some dangerous circumstances. The appropriate amount of water varies according to lifestyle. ...
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  • 1,848
4 votes

How much water does a 30 year old male need to drink daily?

The daily water requirements for a 30 years old male are in general the same as for other adults. You need to consume as much water as you lose it. A young adult loses at least about 1 liter per day --...
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  • 15.6k
4 votes

Filtered water vs boiled water

The hazards from drinking water in Mumbai in 2012-2013 were identified as Officials said the contaminants found in Mumbai's water were sand particles, sewage water, E.coli, other bacterial content ...
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  • 13.2k
4 votes

How long would someone be able to live if they suddenly became allergic to water?

Due to the rarity of the condition, pathogenesis is poorly understood. According to Aung, Montelibano, & Zin (2017), water may act as a solvent in aquagenic urticaria, solubilizing an antigen that ...
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  • 5,872
4 votes
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Is it not healthy way to boil water in plastic electric kettle?

This depends, unfortunately. And it does depend a bit on budget as well. Electric kettles used for boiling water can leach certain substances. For plastic the main concern currently is BPA leaching. ...
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  • 6,747
3 votes

Does drinking water mitigate the health risks from daily alcohol consumption?

The most severe health risk from frequent alcohol consumption are liver damage and malnutrition. There are others, see my list of sources, but I'll focus on those two in my reply. The malnutrition ...
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  • 6,998
3 votes

Does hot water kill germs better than cold water?

They weren't entirely wrong. Saying that warm water kills germs better isn't true, but warm water is good for getting rid of dirt, grime, and oils. It works in the same way as dissolving sugar in ...
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3 votes

If I mix 3 liters of water with 3 liters of kool-aid and drank it throughout the day, did I get my daily water intake?

Since there's more than one aspect to your question, I shall answer in two parts to your question: You will get 3+3=6L of water, total, half of which is water with some added sugars and food colorant....
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  • 1,205
3 votes

If I mix 3 liters of water with 3 liters of kool-aid and drank it throughout the day, did I get my daily water intake?

Yes, it counts. While the basic recommendation is to drink 2-3 liters (In the US, the recommendation is "8x8", or 8 8oz glasses of water per day), all fluids actually count towards that total. While ...
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  • 6,540
3 votes

How often should you drink water? Not how much

In a recent Time magazine article, they reference a 2015 study in The American Journal of Clinical Nutrition about recommended water drinking frequency, "A randomized trial to assess the ...
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  • 313
3 votes

Benzene derivatives in tap water?

Less bad than benzene itself. The reason for this is that the alkyl groups on toluene, ethyl benzene and xylene can all be metabolized to carboxylic acids by the liver rather than oxidizing the ring ...
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