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Term Definition
Magnetic resonance angiography (MRA)

a diagnostic test that uses a powerful magnet and radio waves to create detailed images of the arteries and surrounding tissues

Magnetic resonance imaging (MRI)

A diagnostic test in which a powerful magnetic field and radio waves are used to create detailed 3-D images of body tissue, such as the heart or brain.

Medical history

A catalogue of a person's symptoms, present health conditions, past illnesses, medications, and risk factors

Medical Intervention

Any type of medical treatment.

Mediterranean diet

A healthy diet that consists mainly of whole grains, fruits, nuts, vegetables, and fish; lowers your risk of heart disease and stroke


When a woman stops having her period permanently, either due to age or the surgical removal of the uterus and/or ovaries. The average age of menopause is 51. Menopause before the age of 40 is considered premature or early menopause.

Metabolic equivalents (MET)

A unit for measuring exercise intensity. One MET is the amount of effort it takes to sit quietly.

Metabolic rate

The rate at which the body burns calories. It varies among individuals.

Metabolic syndrome

The clustering of specific risk factors in an individual; three or more of the following: higher than normal blood sugar, blood pressure, or triglyceride levels, a large waistline, and low HDL (good) cholesterol.


An amino acid that is a precursor to homocysteine.


An increase in the excretion of a protein called albumin in the urine.


One thousandth of a gram; used to describe the amount of estrogen in birth control pills


Very small blood vessels.

Microvascular dysfunction

When very small blood vessels narrow or doesn't work properly, restricting blood flow to the heart.


The medical term used for urination.

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