An electrocardiogram, called an EKG or ECG, measures the electrical activity of the heart and collects data about heart's health. Typically, a doctor or technician places electrodes connected to a ...

Lymphoma is a cancer that originates in the lymphatic system, a vital part of the body’s immune defenses. This system includes lymph nodes, vessels, and tissues found in the bone marrow, spleen, ...

Hypervigilance is a symptom of many anxiety disorders but is most commonly associated with post-traumatic stress disorder or PTSD — it is part of the condition's diagnostic criteria. Someone ...

A wide range of psychological disorders can lead to feelings of dysphoria, a sensation often described as an overwhelming sense of dissatisfaction with life in general. For those who experience it, it ...

The good news: blue waffle disease isn't a real STI. Back in 2010, this urban legend began with a photograph showing an infected vagina with a blue labia. While there's no definitive information about ...

Nitric oxide isn’t a nutrient you’ll find on food packaging — but it plays a critical role in how your body moves, recovers, and circulates blood. This molecule helps blood vessels relax and widen, ...

Because of the COVID-19 pandemic and the threat of many other infectious diseases, scientists have begun looking more closely at what causes diseases to spread and what characterizes a person’s ...

Although their functions may appear simple, the ureters perform essential excretory work for the body. These two slender tubes transport urine from the kidneys to the bladder. The ureters use a ...

Bilirubin is a natural byproduct created when your body breaks down old blood cells. Normally, your liver processes this yellow pigment and removes it through bile, which aids digestion. But when the ...

Glomeruli are clusters of small blood vessels in the kidney that allow waste to pass from the blood and into the urine. Glomerulonephritis occurs when the glomeruli swell, damaging the kidneys and ...

Upper respiratory infections (URI's) illnesses develop due to acute infection, most often a virus but also, potentially, bacteria. The nose, larynx, pharynx, and sinuses are affected by URIs. Symptoms ...

It's been over 30 years since The Golden Girls went off the air, but it remains an unforgettable TV classic to this day. The groundbreaking sitcom, which starred Bea Arthur (Dorothy), Betty White ...