Tuberculosis (TB) is a contagious disease that usually attacks the lungs, from where it can spread to other organs. Before effective treatment became available in the 1940s, TB (which was formerly known as consumption) killed many people. In fact, in the early 1900s one out of every seven people in
Tag: white blood cells
Pneumonia is an infection in one or both lungs caused by bacteria, a virus (such as the flu virus), or another infectious agent. The severity of pneumonia depends on several factors, including which germ is responsible, and the strength of the individual’s immune system.
When the immune system detects an infection,
Influenza—commonly called the flu—is a viral infection of the respiratory system. It affects the lungs, as well as the whole body. Most people who get the flu come down with it during “flu season,” which runs from November to March. Children are more susceptible to getting the flu, and often
Bronchiectasis is a chronic obstructive airway disease in which the bronchi become damaged and easily collapse. Bronchi walls contain elastic and muscle fibers, which allow the bronchial tubes to expand and contract while maintaining their shape. In people with bronchiectasis, the elastic and muscular components in the walls of medium-sized
Every year, millions of Americans are hit by cold, flu, and other respiratory infections. While the common cold will rarely cause serious complications, the flu and other infections—such as Legionnaire’s, pneumococcus, and mycoplasma—can lead to severe and potentially life-threatening complications, especially in the young, the elderly, and the chronically sick.
In their quest to gain a better understanding of what causes breast cancer, researchers have identified several risk factors, including getting older, early menstruation (before age 12) and/or late menopause (after age 55), family or personal history of breast cancer, mutations in the BRCA1 or BRCA2 genes, having dense breasts,
Given a choice between invasive surgery and injections that promise tissue regeneration, repairing a joint using stem cells may seem like the smart way to go. After all, stem cells are constantly repairing and replacing damaged tissue within our bodies.
Stem cells are like blank slates with superpowers: They are “unspecialized”
Joint inflammation is easily recognizable—it’s a condition that affects 80 percent of the world’s population. You’ll know inflammation by its symptoms: pain, warmth, redness, swelling, and perhaps loss of joint function. The symptoms are uncomfortable but manageable with rest, ice, compression, elevation—the classic “RICE” treatment—and a non-steroidal anti-inflammatory drug like
You had a fall and suffered the tell-tale scrape on your knee. Within a week, it’s filled in with green pus. Don’t worry, there’s no alien at play here. Pus is a sign that your body’s defense system has kicked in. All you need to do is figure out what
Before you begin reading this book, you might be wondering if it’s worth making dietary and lifestyle changes to protect your heart and your brain—especially if cardiovascular disease or dementia runs in your family. Genetics certainly play a role, but your genes are not your destiny. Research suggests a healthy