Is Fluoride in Your Water Lowering Your IQ and Causing Cancer?

Fluoride in Water: What is it? Why it's There, and does it lower IQ and Cause Cancer?

Fluoride is a naturally occurring mineral found in soil, water, and various foods. In the United States, fluoride was first added to public water supplies in 1945 in Grand Rapids, Michigan, to combat tooth decay. The Centers for Disease Control and Prevention (CDC) recognizes community water fluoridation as one of the 20th century’s significant public health achievements, citing its role in reducing cavities by approximately 25% among children and adults. As of 2020, about 62.9% of the U.S. population receives fluoridated water through community water systems .

Despite its dental health benefits, concerns have been raised about fluoride’s potential adverse effects on the body. Some studies suggest a possible association between high fluoride exposure and reduced IQ in children. For instance, a systematic review indicated a connection between fluoride exposure and lower IQ scores, though it emphasized that this does not establish a direct cause-and-effect relationship . Regarding cancer, extensive research, including reviews by the National Cancer Institute, has found no consistent evidence linking fluoridated water to increased cancer risk .

For individuals concerned about fluoride intake, several measures can help reduce exposure. Using water filters certified to remove fluoride, such as reverse osmosis systems, can decrease fluoride levels in drinking water. Opting for bottled water labeled as fluoride-free is another alternative. Additionally, moderating the use of fluoridated dental products and being mindful of processed foods and beverages made with fluoridated water can further limit fluoride consumption.

In summary, while fluoride has played a pivotal role in improving dental health, it’s essential to stay informed about ongoing research and make personal choices aligned with individual health considerations.