The body is made up of many types of cells. Normally, cells grow, divide, and produce more cells as needed to keep the body healthy and functioning properly. Sometimes, however, the process goes wrong and cells become abnormal, forming more cells in an uncontrolled way. These extra cells form a mass of tissue, called a …
Category Archive: Main
Dec
02
Nov
29
Muscle Cramps
As we normally use our muscles, they alternately contract and relax as we move our limbs back and forth. Similarly, the muscles that maintain our posture contract and relax in a synchronized fashion. A muscle that involuntarily contracts without our consciously willing it is called a “spasm.” If the spasm is forceful and sustained, it …
Nov
29
Hydrocephalus
The term hydrocephalus is derived from the Greek words “hydro” meaning water and “cephalus” meaning head. As the name implies, it is a condition in which the primary characteristic is excessive accumulation of fluid in the brain. Although hydrocephalus was once known as “water on the brain,” the “water” is actually cerebrospinal fluid (CSF)–a clear …
Nov
29
Osteogenesis imperfecta
Osteogenesis imperfecta (OI) is a genetic disorder characterized by fragile bones that break easily. It is also known as “brittle bone disease.” A person is born with this disorder and is affected throughout his or her life time. In addition to fractures people with OI often have muscle weakness, hearing loss, fatigue, joint laxity, curved …
Nov
24
Something about Virus
Virus is a small infectious agent that can only replicate inside the cells of another organism. Viruses are too small to be seen directly with a light microscope. Viruses infect all types of organisms, from animals and plants to bacteria and archaea, although there are millions of different types. Viruses are found in almost every ecosystem on …
Nov
24
Beware of Rabies
Definition of Rabies Rabies is a disease (caused by the rabies virus) primarily of animals, including both wild and domestic animals and human beings. Although people usually associate rabies with dogs, among domesticated animals, rabies today is more likely to be found in cats. Description of Rabies Cats, dogs and cattle account for nearly 90 percent …
Nov
22
Evolution of Life
The earliest evidence of life on planet Earth may date as far back as 3.85 billion years ago.At that time the first simple, single-celled organisms called prokaryotes may have appeared. The exact scientific process that led to the creation of prokaryotic life still eludes scientists today. Whether these early organisms metabolized energy through the process …
Nov
22
Leukemia
Leukemia is a cancer of the blood or bone marrow and is characterized by an abnormal proliferation (production by multiplication) of blood cells, usually white blood cells (leukocytes). Leukemia is a broad term covering a spectrum of diseases. In turn, it is part of the even broader group of diseases called hematological neoplasms. Leukemia is clinically and pathologically subdivided …
Nov
22
Obesity & Overweight
Obesity and overweight have in the last decade become a global problem – according to the World Health Organization back in 2005 approximately 1.6 billion adults over the of age 15 were overweight, at least 400 million adults were obese and at least 20 million children under the age of 5 years were overweight. Overweight …
Nov
22
Dementia
Dementia means “deprived of mind”. It is a serious cognitive disorder. It may be static, the result of a unique global brain injury or progressive, resulting in long-term decline in cognitive function due to damage or disease in the body beyond what might be expected from normal aging. Although dementia is far more common in old people, it …