Hand Washing Works Whether the Water's Hot or Cold

Hand Washing Works Whether the Water's Hot or Cold

"We learned even washing for 10 seconds significantly removed bacteria from the hands", said Schaffner (who previous year proved that the five-second rule isn't real and food dropped on the floor isn't safe to eat, dang).

Researchers used a harmless strain of E.coli to test the effectiveness of hand washing by 21 volunteers. They also found that lathering hands for just 10 seconds was sufficient to remove germs.

Schaffner said: ‘This study may have significant implications towards water energy, since using cold water saves more energy than warm or hot water'.

While the study indicates that there is no difference between the amount of soap used, more work needs to be done to understand exactly how much and what type of soap is needed to remove harmful microbes from hands, said co-author Jim Arbogast, vice president of Hygiene Sciences and Public Health Advancements for GOJO.

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According to researchers, washing your hands in cold water is just as effective at reducing bacteria as washing your hands in hot water.

It was found that neither the temperature of the water nor the amount of soap they used made any difference to the amount of germs removed from their hands.

The small study of 20 people found using water at 15 degrees left hands as clean as water heated to 38 degrees.

The song takes about 20 seconds, which is the amount of time people should wash their hands.

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In a previous study, Schaffner examined the difference between using a paper towel or airing drying hands.

Do you use hot or cold water when you wash your hands?

Currently, the Food and Drug Administration (FDA) recommends that plumbing systems at food establishments and restaurants provide water at 100º F for washing hands.

The study appears in the June issue of the Journal of Food Protection. "Does it give us the definitive answer about hand washing?" "If you just changed a diaper or you've been in the garden or you're cutting up a raw chicken, don't think you're good to go after 10 seconds if you can still see or feel something on your hands", he says. "It doesn't necessarily have strong evidence, because they haven't done the studies to back it up, but it is still an important piece of developing that evidence so that we know that whatever instructions we are giving is the best possible advice to be giving out".

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"When you want to decontaminate your hands by washing them, the soap chemically detaches the dirt and the organisms, which then come off after you rinse them", she said.

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