Test Your Health Smarts: 30 Essential Questions About WellnessShare:FacebookPinterestTwitterMailWhat is the main reason cavities form in teeth?24%Next Correct Incorrect The correct answer is:Sugars and starches breaking down due to bacterial activity What is the main reason cavities form in teeth? Chewing gum Eating dairy products Sugars and starches breaking down due to bacterial activity Inadequate fluoride consumption 24%