Answer this one: Although mammograms can identify tumors at a very early stage, the tumors may have been growing for how long by the time they show up on the X-ray?
Knowing about marijuana can help you recognize its use in others, so you can encourage them to seek treatment. Marijuana contains the flowers, stems, seeds, and leaves of the hemp plant Cannabis sativa. To learn more about marijuana, take this quiz.
Medication Safety Quiz
Learn how to better manage your medications by taking this quiz.
Melanoma is a type of skin cancer. What increases your risk? What can you do to prevent it?
To keep your memory sharp, it's helpful to understand factors that affect memory for better or for worse.
Meningitis is an infection of the membranes that surround the brain and spinal cord. Both viruses and bacteria cause meningitis. Bacterial meningitis can be life-threatening; viral meningitis seldom is. Learn more about bacterial meningitis through this quiz.
Answer this one: A woman is considered to have begun menopause after she has missed how many menstrual cycles?
Mercury in Fish Quiz
Answer this one: Mercury in its elemental form is relatively nontoxic. In the environment, however, the elemental form of mercury is transformed into an organic form, which is easily absorbed by living things. This organic form, which builds up in the body, is called what?
Migraine Headaches Quiz
Many households in the United States have someone who suffers from migraine headaches. Take this quiz to test your knowledge of migraines.
Miracle Diet Quiz
Dieting is temporary when it comes to losing weight. To keep weight off you actually have to change your lifestyle. Why is it so hard? For one thing, we may not know as much as we think. Take our quiz to test your knowledge.
Mold Allergy Quiz
Molds are microscopic fungi that are everywhere in our environment. Learn about mold allergy by taking this multiple-choice quiz.
Multiple Births Quiz
Today, more women than ever before are giving birth to multiples. What explains the increase in through the past decade? Take this quiz to find out.
Multiple Sclerosis Quiz
Multiple sclerosis is a disease of the central nervous system, the brain and spinal cord. Its symptoms can range from benign to severe. Find out more about this mysterious illness by taking this quiz.
Nervous System Quiz
The nervous system is responsible for our thoughts, our emotions and our movements. The brain, nerves and spinal cord are all members of this important process. How much do you know about the nervous system? Do you know what happens when the system malfunctions? Find out by taking this multiple-choice quiz.
New Year's Quiz
Happy New Year! It’s time to look ahead to the next 12 months and see what you can do to maintain or improve your health. Do you need to lose weight? Quit smoking? Start exercising?
Nicotine, one of the main chemicals in tobacco, is the primary reason that smoking is so addictive. Even though most smokers know that smoking is bad for them, they find it difficult to quit because of the nicotine's effect.
Nicotine-Replacement Therapy Quiz
Here is the latest information about nicotine replacements, inhaler therapy, and other aids that can help you stop smoking.
Night Shift Quiz
If you work the night shift, you face unique health and productivity challenges. Many night workers have difficulty falling asleep during the day and staying awake at night.
Non-Hodgkin Lymphoma Quiz
Lymphomas are a type of cancer that affects the lymphatic system. Learn more about non-Hodgkin lymphoma (NHL) by taking this true-false quiz.
Nutrition and Cancer Quiz
True or false: Studies suggest that people who consume lots of antioxidants (vitamin C, vitamin A, and carotenoids) from food sources have a lower cancer risk.
Nutrition Quiz for Seniors
Eating a healthy diet is essential for people of every age. But as you age, doing so is especially important. To assess how much you know about good nutrition, take this quiz.
Obesity Basics: What Is It? How Is It Treated?
There is an epidemic of obesity in this country, health experts say. But what is obesity? How is it measured?
Older, Wiser, Wider?
Getting older doesn't have to mean getting wider, the experts say. The first step in the fight against flab is knowing your opponent. Take the following quiz to find out how well armed you are.
Organic Foods Quiz
Organic ingredients are grown and processed without artificial additives and used in a wide variety of products. Find out more about organic foods by taking this quiz.
Learn more about osteoarthritis, the most common type of arthritis, by taking this quiz.