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Mercury is an element that is found in air, water and soil. It has several forms. Metallic mercury is a shiny, silver-white, odorless liquid. If heated, it is ...
The tissue that lines your lungs, stomach, heart, and other organs is called mesothelium. Mesothelioma, also known as malignant mesothelioma, is cancer of ...
Metabolism is the process your body uses to get or make energy from the food you eat. Food is made up of proteins, carbohydrates, and fats. Chemicals in your digestive ...
What is metabolic syndrome? Metabolic syndrome is the name for a group of risk factors for heart disease, diabetes, and other health problems. You can ...
Methamphetamine - meth for short - is a very addictive stimulant drug. It is a powder that can be made into a pill or a shiny rock (called a crystal). The powder can be eaten ...
What are migraines? Migraines are a recurring type of headache. They cause moderate to severe pain that is throbbing or pulsing. The pain is often on ...
Some forgetfulness can be a normal part of aging. However, some people have more memory problems than other people their age. This condition is called mild ...
Minerals are important for your body to stay healthy. Your body uses minerals for many different jobs, including keeping your bones, muscles, heart, and brain ...
A miscarriage is an unexpected loss of pregnancy before the 20th week of pregnancy. Most miscarriages happen very early in the pregnancy, often before ...
Metabolism is the process your body uses to make energy from the food you eat. Food is made up of proteins, carbohydrates, and fats. Chemicals in your digestive ...
What is the mitral valve? The mitral valve is one of the four valves in your heart. Heart valves have flaps that open and close. The flaps make sure that ...
What are mobility aids? Mobility aids help you walk or move from place to place if you have a disability or an injury. Types of mobility aids can include: ...
Molds are fungi that can be found both outdoors and indoors. They grow best in warm, damp and humid conditions. If you have damp or wet spots in your house, ...
Moles are growths on the skin. They happen when pigment cells in the skin, called melanocytes, grow in clusters. Moles are very common. Most people have between ...
Most people feel sad or irritable from time to time. They may say they're in a bad mood. A mood disorder is different. It affects a person's everyday emotional ...
Mosquitoes are insects that live all over the world. There are thousands of different species of mosquitoes; about 200 of those live in the United States. Female ...
Motion sickness is a common problem in people traveling by car, train, airplanes, and
especially boats. Anyone can get it, but it is more common in children, ...
Every year thousands of people in the U.S. die from motor vehicle crashes. Trying to prevent these crashes is one part of motor vehicle safety. Here are some ...
Your mouth is one of the most important parts of your body. It has many different functions. It allows you to: Take in food and drink Breathe in air Start ...
Movement disorders are neurologic conditions that cause problems with movement, such as: Increased movement that can be voluntary (intentional) or involuntary ( ...
