Health experts emphasize the significant dangers of taking dietary supplements without professional medical guidance. The common assumption that 'natural' equals 'safe' is incorrect, as supplements contain active ingredients that can cause severe side effects or dangerous interactions with prescribed medications—such as vitamin K impacting blood thinners or antioxidants interfering with cancer therapies. Overdose risks are also substantial: excessive vitamin A can damage the liver and bones, too much iron can cause nausea and organ injury, and high doses of vitamin D may lead to dangerous calcium levels. Furthermore, relying on supplements to manage symptoms can delay the diagnosis of underlying medical conditions. Studies show that routine vitamin intake does not necessarily extend life or prevent chronic diseases in healthy individuals. Misuse of these products frequently leads to emergency room visits, highlighting the need to consult doctors or pharmacists and avoid using supplements as a substitute for a balanced diet or necessary medical treatment.