The relationship between antioxidant intake and stroke risk
By: Alicia M Prater PhD
Antioxidants are chemicals that protect cells from free radicals, atoms formed by some chemical reactions with oxygen (like the oxidation of low density lipoprotein, the LDL form of cholesterol), which can occur naturally or in response to environmental exposures to toxins, such as cigarette smoke...
Anatomy: The structure and function of the wrist
By: Denise Loar
The wrist, also known as the carpus, is located on the proximal region of the hand. Connected by several ligaments, there are eight small bones (carpals) arranged in two rows of four that articulate with each other, along with the radius and ulna. They are...
Anatomy: The structure and function of the knee
By: Tyler Bullock
Bad knees. Everyone has heard about someone with a chronic knee ailment, particularly among the elderly in the community. Knee problems usually plague the patient for the remainder of their life and, on top of that, having dysfunctional knees is a huge physical set-back for...
By: Jose Juan Gutierrez
The immune system is an organization of specialized cells, tissues, proteins, and organs that interact in a dynamic way to protect the human body against foreign invaders. Microbes, such as bacteria, parasites, and viruses are the principal targets of the immune system. Through the production...
Cells of the immune system
By: Jose Juan Gutierrez
The immune system consists of a vast collection of cells, including lymphocytes and cell-devouring phagocytes. Some of these cells attack all foreign invaders (antigens), while others attack only specific targets. In defending the human body against disease, the immune system cells need to function cooperatively...
Scientists: Stem cells may triple lifespan
By: Terrence Aym
Stem cell research promises cancer breakthroughs, limb and organ regeneration, a cure for heart disease…and now breaking research suggests stem cells may hold the key to tripling human lifespans. A research team from the University of Pittsburgh Medical Center [UPMC Press release] has discovered...
Is there a case for legalizing assisted dying?
By: A.W. Berry
There is widespread precedence for the legalization of assisted dying as evident via U.S. Supreme Court rulings, state legislative acts and state court decisions. In the case of the Federal Supreme Court, two cases appealing circuit court rulings against assisted suicide were overturned in...
Enzymes and secretions in the small intestine
By: Melody St. John
Digestion is a vital body process that is carried out by the organs in the digestive system. It involves the breaking down of food into small molecules that the body can absorb. The small intestine is a key organ in this body system where most...
By: Blaise Pascal
Diseases have affected the population for thousands of years and will likely continue to do so. They may come in the form of bacteria, viral or any number of other problems with bodily systems. How rare individual diseases are, is often very difficult to classify...
Rarest diseases in the world
By: Alicia M Prater PhD
The definition of a rare disease varies by country and health agency, but the National Institutes of Health in the United States currently defines “rare disease” as one affecting less than 200,000 Americans. The agency estimates that there are approximately 7,000 rare...

 

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