Experts are increasingly urging people to know their BMI, a figure that takes into account not just weight but also height to indicate body fat.

How important is it to draw up a living will? Take this quiz and find out.

Answer this: Which is a health benefit of lifelong exercise? A. Avoiding high blood pressure B. Preventing depression C. Preventing constipation D. All of the above

True or false: Meditation appears to benefit the immune system and may affect the nervous and vascular systems, which in turn affect joint health.

Find out more about this degenerative disease of the brain by taking this quiz.

True or False: Arthritis affects only the wrist, ankle and knee joints.

Although millions of Americans have balanced disorders, it's sometimes difficult to diagnose them, because "dizziness" is such a broad term.

True or false: Fifty percent of the lumps women find when checking their breasts aren't cancerous.

True or false: If you don't get enough calcium in your diet, your body will take the calcium it needs from your bones.

What do you know about crime against the elderly, and how to prevent it.

More than 14 million Americans have been diagnosed with diabetes and almost seven million more have diabetes but don't realize it, according to the CDC. Yet diabetes is the sixth leading cause of death in the United States.

True or false: A drug-alcohol interaction can lead to extreme drowsiness and other effects. Do you know the answer to this and other questions about drug interaction?

Learn more about impotence by taking this multiple-choice quiz.

Which habits can harm your vision? Learn about them by taking this quiz.

Our world is filled with devices that make sound. But when someone is exposed to harmful sounds, the inner ear can be damaged.

True or false: Heat-related illness is only a concern if the temperature reaches 100 degrees F.

Learning how to prevent knee injuries and treating them if they occur can help you stay active at work and play.

Older adults often suffer from depression needlessly because they fail to recognize its signs or are reluctant to talk with their doctor about it.

Americans are living longer than ever; by the middle of this century 600,000 of us will be centenarians. If you want to live longer and stay healthy longer, take this quiz from the Mayo Clinic to see how much you know.

People who need long-term care include those with a chronic illness or a physical handicap.

Learn how to better manage your medications by taking this quiz.

To keep your memory sharp, it's helpful to understand factors that affect memory for better or for worse.

Eating a healthful 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.

Learn more about osteoarthritis, the most common type of arthritis, by taking this quiz.

Overactive bladder is a major health problem that can have a seriously debilitating effect on nearly every part of daily living. It can cause isolation, depression, guilt, denial, fatigue from sleeplessness, work absenteeism and problems with relationships.

Just because a drug is available without a prescription doesn't mean it's safe to take. Take this quiz and learn the ins and outs of OTC medicines.

This illness has existed for thousands of years. Learn more about Parkinson's disease by taking this quiz.

Bacterial pneumonia kills thousands of older Americans each year. Yet there is a vaccine that offers protection against this deadly illness. How much do you know about pneumonia and the vaccine?

Take this quiz to find out how to cut your risk of developing diabetes.

This true/false quiz will help you build your knowledge of steps you can take to prevent prostate cancer.

Rheumatoid arthritis is a disease that causes pain, swelling and destruction of the joints.

You don't have to be reminded about the aging process. It's inevitable. But just because you're over 50 doesn't mean you can't be fit. Learn more about senior fitness by taking this quiz.

"Pack up your troubles in your old kit-bag," the old song goes, "and smile, smile, smile." But older adults may not be ready to offer a toothy grin if they don't get regular dental checkups. Your teeth are important, no matter what your age. Find out how much you know about teeth by taking this quiz.

Stroke is the third-leading cause of death in this country and a leading cause of disability.

Learning about incontinence can give you the courage and understanding needed to bring the subject up with your health care provider.

Cataracts are a common eye problem among older adults.

Cancer of the colon or rectum (colorectal cancer) usually develops slowly, over several years. Excluding skin cancers, colorectal cancer is the third most common cancer in both men and women in the United States and the second leading cause of cancer-related deaths, according to the American Cancer Society (ACS). Still, the death rate from colorectal cancer has been dropping for the last 15 years because of better detection and treatment. Take this simple assessment to learn about your risks for colorectal cancer.

Coronary artery disease (CAD) is the most common type of heart disease. It is the leading cause of death in the United States in both men and women. Determine your risk for developing CAD using this assessment tool.

This questionnaire can help you find out how likely you are to have depression.

Osteoporosis is a disease that slowly weakens bones until they break easily. People who suffer a broken bone related to osteoporosis often experience a downward turn in their overall health.