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A 40-year-old member asked:

why is sodium fluoride put in our water?

4 doctor answers10 doctors weighed in
Dr. Peter Karsant
Dentistry 39 years experience
Decay: To prevent decay and it has worked fantastically well especially for children.
Dr. Morey Furman
Dentistry 37 years experience
It reduces cavities: When Fluoride is absorbed into the body of a child developing teeth, the Fluoride gets incorporated into the calcified matrix of dental enamel. This Fluoride reinforced enamel is more resistant to tooth decay than enamel without fluoride. This reduces the incidence of cavities and promotes healthier teeth.
Dr. James Beck
Dentistry 11 years experience
Prevents decay: Water fluoridation has been one of the greatest advances in health care in the 20th century. It has been proven time and time again that Fluoride makes enamel stronger and reduces tooth decay and has no detrimental side effects. It aids in remineralization of enamel and also has antibacterial properties. Fluoride occurs naturally in ground water in some areas.
Dr. Howard Schneider
Pediatric Dentistry 34 years experience
Small amounts good: Like many things (vitamin c, iron, oxygen, water), Fluoride in the correct small quantity is safe. It is only toxic when systemic exposure is much higher then the recommended amount. At the correct amount Fluoride makes your tooth enamel more acid resistant and lowers tooth decay. That is why small amounts are in drinking water. In reality you need a lot over a long time to have any problems.

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Can sperm travel through water and get someone pregnant?

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Dr. Jeff Livingston
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No: Sperm must be inside the vagina to travel up the uterus to fertilize an egg. Sperm can not travel though a swimming pool or bathtub.
A 38-year-old member asked:

Is mixing hydrogen peroxide and warm water bad for your teeth if you gargle it?

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Dr. Simon Rosenberg
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A 32-year-old member asked:

What can I do about my swollen ankles from salt sensitivity?

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Dr. Arnold Beresh
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See below: Reduce your salt intake by using a salt substitute. Elevate your feet and wear a compression sock.
A 35-year-old member asked:

Why does medical saline use salt water instead of pure water?

1 doctor answer1 doctor weighed in
Dr. Thomas Riney
Pediatrics 37 years experience
Matches body salt: Similar saline content as your blood.
A 46-year-old member asked:

Can drinking water after exercise make your heart rate increase?

1 doctor answer2 doctors weighed in
Dr. Rick Koch
Cardiology 22 years experience
No: No....Dehydration following exercise causes increased heart rates....Hydration should lower, not raise heart rates. However heart rate recovery ...How quickly heart rate returns to baseline is a measure of cardiovascular fitness.

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Last updated Jun 8, 2015

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