Myth or Fact: Common Health Beliefs, Busted

In this Myth or Fact segment, primary care physician Jubril Oyeyemi, M.D., breaks down some of the most common health misconceptions patients hear every day, many of which can actually do more harm than good if followed.

One major myth is that taking more vitamins is always beneficial. While deficiencies can be harmful, too much of certain vitamins can also lead to negative side effects, a condition known as hypervitaminosis. Oyeyemi emphasizes that most people get sufficient nutrients through a balanced diet, and unnecessary supplementation can sometimes cause more harm than benefit. Exceptions do exist, but supplements should generally be guided by a health care professional.

Another common misconception is that the flu shot can give you the flu. In reality, this is a myth. What some people experience after vaccination, like mild fever or body aches, is simply the immune system being activated and “learning” how to fight the virus, not an actual infection.

Antibiotics are also frequently misunderstood. Many people believe they help with colds, but since most colds are caused by viruses, antibiotics are ineffective and may even cause harm through side effects or resistance. Instead, rest, hydration and proper nutrition are typically the best course of action.

The segment also addresses everyday beliefs, like whether cracking your knuckles causes arthritis. Research has shown no link, making this another myth. Similarly, the idea that everyone should drink a fixed amount of water daily isn’t entirely accurate. Oyeyemi says hydration needs vary by individual and are better guided by thirst and urine color.

Other myths include the belief that green mucus always means a bacterial infection, that all carbs are bad or that detox diets are necessary to “reset” the body. Oyeyemi explains that the body is naturally equipped to regulate itself, especially with a healthy, fiber-rich diet.

Finally, the idea of “sweating out” a fever can be risky. While sweating may occur naturally, untreated high fevers can lead to complications and should be managed appropriately.

This Myth or Fact discussion highlights the importance of evidence-based care and encourages patients to question common health advice and consult trusted medical professionals.