Mineral Madness: 3 Myths About Fluoride You Shouldn’t Believe

January 18, 2026

Dentist applying fluoride to patient's teeth

Although enamel is the hardest substance produced by the human body, that doesn’t mean it’s invincible. If you eat too many sugary or acidic foods, you can wear it down, increasing the risk of cavities, injuries, and other concerns.

Your dentist can help by providing a topical fluoride treatment, which helps strengthen your enamel. However, many people have heard false information about this naturally occurring mineral. Continue reading to learn about 3 myths about fluoride that you shouldn’t believe!

Myth #1: Fluoride is Dangerous for Children

If you’re worried that your dentist might inadvertently harm your child’s teeth by applying too much fluoride, you can thankfully set your concerns aside. Although overexposure to this ingredient can cause spotting on the surface of their teeth, your family dentist won’t do anything to knowingly hurt your child’s grin. The amount of this ingredient in topical treatments is considered safe when administered by a licensed provider who understands the risks and how to apply the medication safely.

In fact, regular fluoride treatments and drinking fluoridated water have been shown to reduce future decay and even prevent tooth loss. That said, if your child is under 7, you may want to monitor them while they brush their teeth to ensure they don’t swallow too much fluoridated toothpaste, which can be toxic if ingested in large amounts.

Myth #2: Drinking Fluoridated Water Causes Cancer

There is false information circulating among the general public about fluoride and the potential impact it might have on your oral or general health. For example, many people have heard that drinking it can cause cancer or contribute to other major health concerns, such as kidney or heart problems, diabetes, or other issues.

However, many trusted organizations, including the Centers for Disease Control and Prevention (CDC), the American Cancer Society, and the National Cancer Institute, agree that adding the recommended fluoride level to drinking water does not cause cancer. Furthermore, no credible evidence has been found that links drinking fluoridated water with an increased risk of developing it.

Myth #3: Fluoridated Water Doesn’t Affect Tooth Decay

Some people believe that including this ingredient in public drinking water doesn’t make much difference and is unnecessary or even unhealthy. But the truth is that studies have revealed that fluoridated water supplies can reduce tooth decay by approximately 25% in children and adults alike.

Not only that, but it promotes remineralization, meaning it actively strengthens teeth so they are more resistant to bacteria and acid that cause cavities and other issues.

If you have additional questions about fluoride and its effect on your dental health, you can learn more by scheduling an examination with your dentist!

About the Practice

Patients at Beck Dental Care of Columbia benefit from a team of dentists eager to help families build and maintain the healthiest and most beautiful versions of their smiles. Dr. Hart, Dr. Williams, and Dr. Matthews collaborate to offer a comprehensive menu of services, including routine preventive care, to people of all ages. Their caring approach is combined with advanced technology to deliver comfortable, accurate treatments for results meant to last. You can request an appointment on the website or call (931) 416-3698.