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January 18, 2018  |  Login
 
AIDS and HIV
 
by James F. Balch, M.D. and Mark Stengler, N.D.

It is a disturbing and widespread myth that HIV (human immunodeficiency virus) and AIDS, the usually fatal condition believed to be caused by HIV, no longer pose a grave public health threat. The Centers for Disease Control estimates that 5 million Americans are considered to be at high risk for HIV infection. Half of all new cases of HIV occur in people under the age of twenty-five. Although scientists have discovered several treatments that extend the life span of people with the virus, there is still no cure. Even grimmer is the news that AIDS rates, after a short period of decline, are on the rise. Gay men were once thought to be the group most at risk for contracting HIV, but statistics show that heterosexual teenagers, both male and female; Hispanics; blacks; and women are now contracting the disease in rapidly increasing numbers.

HIV is transmitted via vaginal or anal sex or by blood-to-blood contact. It is vitally important for everyone to practice safe sex, preferably in the form of a monogamous relationship with an HIV-free partner, and to abstain from intravenous drug use. Don't rely solely on condoms to protect you, as they sometimes let HIV and other viruses pass through. Intravenous drug users are at a high risk: if you have an addiction, you should seek help, but at the very least you should never share needles with anyone.

The virus may also be passed from mother to child during birth or breastfeeding. It is possible to greatly reduce the chance of transmitting the disease during birth. Pregnant women should be tested for HIV as soon as possible, so that they and their unborn children can receive vital treatment. HIV is sometimes contracted by health-care workers who are stuck with infected needles. Also, be aware that the virus cannot be transmitted through casual contact, such as coughing, sneezing, shaking hands, or dry kissing.

Like all viruses, once HIV has entered the body, it seeks to replicate itself. What makes HIV far deadlier than, say, a cold virus, is that it takes a particularly aggressive tactic within the body: once it invades a cell, it reprograms that cell's genetic material. Normally, a cell will reproduce by dividing and creating a copy of itself. In this way, the body regenerates itself at the most basic level. But when cells that are invaded by HIV divide, they don't create copies of themselves-they create copies of the virus. Those copies then invade other healthy cells, so that, eventually, the virus cells far ­ outnumber the healthy ones. To make matters worse, HIV attacks a particular kind of immune cell, called a Helper T-cell (these lymphocytes have a receptor protein called CD4+ in their outer membrane and so are also referred to as CD4+ lymphocytes). As more and more CD4+ cells are destroyed, the body's ability to fight off infections is dramatically weakened.

Most people do not notice any symptoms when HIV first invades the body. People with HIV will usually go for years without knowing it, unless they are tested for the disease. Before AIDS develops, many will begin to experience symptoms such as night sweats, fatigue, fevers, diarrhea, weight loss, enlarged lymph nodes, thrush, herpes, mouth ulcers, and bleeding gums. Later, as the number of T-cells continues to decrease, their bodies will be highly vulnerable to infection by viruses and bacteria. HIV-positive people might contract a variety of diseases that are otherwise rare, such as Kaposi's sarcoma (a kind of skin cancer characterized by raised purple welts), the Epstein-Barr virus (also known as chronic fatigue syndrome), neurological ­ problems, eye infections (including cytomegalovirus, which can cause blindness), ­ toxoplasmic encephalitis (a brain infection), and systemic candidiasis (yeast infection). Other infections are those we usually consider common, such as pneumonia and various respiratory ailments.

Acquired immunodeficiency virus (AIDS) is the most severe form of HIV infection.  ....read more

 
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