It seems these days like killer toxins are lurking in every corner of your home, office or school. Here's another finding to fuel your paranoia -- a fire retardant used in many couches called PBDE has been linked to lots of problems, including cancer and autism in children. While PBDEs aren't used in sofas any more, chances are you have an older sofa in your house -- I know I do. What's more, a different fire retardant chemical, called Tris, is replacing PBDEs in furniture, and it's been shown to be just as deadly.

What can we do, aside from building our own furniture, to escape the onslaught of harmful toxins in our home? Or is it something we should even be concerned about in the first place?

Did you know the number one symptom of lung cancer is a persistent cough? Other symptoms include bouts of wheezing, shortness of breath, trouble swallowing, blood-streaked sputum, and a hoarse voice.

Did you know 28 percent of all cancer deaths are due to lung cancer and that it's the number one killer among both men and women?

Did you know that Hookahs -- used to inhale tobacco through a water pipe -- let in the same cancer-causing substances as cigarettes and are just as harmful as smoking, despite the fact that many people believe they are safer?

Now you know.

Source: WebMD: the Magazine, March/April 2007

Slathering on sunscreen protects us from the dangers of the sun. Right?

Nope, say experts who insist protective clothing and hats are the best way to cover up against UV rays, prevent skin cancer, and minimize the aging effects of the sun.

Think about this:

Most of us rely on sunscreen for skin cancer prevention. But one doctor from Zurich who just finished reviewing sun protection strategies around the world says although the predominant mode of sun protection is sunscreen, this method can be abused in attempts to extend time spent in the sun.

I'm never quite sure what to do about vitamin supplements. Should I take them? Or should I leave them?

Sometimes I think supplements could surely help me with whatever I'm lacking in my diet. Other times I don't want to mess with what might be working just fine in my body. Now if a doctor tells me my iron is low, I'll take a supplement to boost my levels. But if there is nothing apparently off kilter in my system, I tend to just leave things alone.

I'm glad at the moment for my current plan. Because nutritionists now suspect that high doses of vitamins and minerals -- believed by some to prevent cancer -- might actually be harmful.

Think about this:

The American Medical Association journal JAMA recently reported that high doses of antioxidant supplements can be harmful. Vitamin advocates challenged the analysis, saying it excluded large studies from China and Italy showing antioxidant supplements lowered mortality risk.

Consumers still should read labels carefully.

"Some of the things called daily vitamins can be higher than what we think is desirable," says one researcher who urges consumers to look for something about 100 percent of the daily value. That's really all people need, she declares. But a healthy diet is still most important and can prevent the need for supplements altogether. Yet for those who are sick, don't have access to nutritious food or for some other reason cannot eat well, the 100-percent rule is a good guide.

Cancer patients who have heart attacks are typically not treated with a course of life-saving aspirin because of the belief that these patients might experience lethal bleeding.

This belief is now under dispute and researchers at The University of Texas M. D. Anderson Cancer Center say that without aspirin, the majority of these patients will die. Their arguments, subject of a recent study, will be published in the February 1 issue of the journal Cancer.

Aspirin has been viewed as harmful because of its tendency to thin blood. Because cancer patients can experience low platelet counts and abnormal clotting, aspirin has been considered a contraindication. But this study found that nine of 10 cancer patients with low platelet counts who experienced heart attacks and who did not receive aspirin died. Only one patient died, however, in a group of 17 cancer patients who received aspirin.

This conclusion -- that aspirin helps people with cancer just as it does for people without cancer -- may help medical professionals determine guidelines for treatment of heart attacks in cancer patients. Because right now, physicians are uncertain about how to balance treatment for both conditions.

The evidence is stacking up. And it seems almost everyone will soon agree that exercising can help prevent a return of cancer for those who have already done battle with the disease.

The American Cancer Society just issued a report updating nutrition and physical activity recommendations for cancer survivors. Exercise tops the list of recommendations.

For some types of cancers, exercising for just one to three hours per week can lower the risk of cancer recurrence and death, as well as death from all causes. Exercise has also been shown to improve fitness, diminish fatigue, and boost quality of life for survivors.

The report also states that while a vegetarian diet may be healthful in some ways, there is no direct proof that the diet can prevent cancer recurrence. Survivors who do choose a vegetarian lifestyle should ensure they are receiving an adequate intake of nutrients.

A standard multivitamin and mineral supplement equivalent to 100 percent of the Daily Value can help survivors meet their nutrient needs when it's difficult to eat a healthy diet. Some supplements -- such as those high in folic acid or antioxidants -- may be harmful during cancer treatment.

According to the American Cancer Society, food safety is especially important for cancer survivors, especially during treatment that causes immunosuppression.

And then there's alcohol. Alcohol can affect the risk for new primary cancers and should be used sparingly -- or not at all.

A chemical found in hard plastics -- such as CD cases, baby bottles, food-storage containers, and even electronics parts -- has been loosely linked to incidences of breast cancer. Popular opinion cautions that if we were not worried about this news yesterday, we should not be worried about it today -- because studies are preliminary and nothing is definitive at this point. But there are definitely two sides to the debate over how harmful these hard plastics may be.

The chemical in question -- a pseudo-estrogen called bisphenol-A (BPA) -- appears to be absorbed by breast tumor cells, according to a new study published in the August 28 issue of Chemistry & Biology. Previous studies have linked small exposures of BPA to prostate abnormalities in mice that suggest a link between the plastic chemical and human prostate cancer. Some studies even theorize that embryonic and fetal exposure might influence mental retardation and birth defects. And because this pseudo-estrogen is a synthetic material that in human cells can trigger estrogenic effects, breast cancer now comes up as a disease that may result from this questionable chemical.

Critics say that average levels of the chemical found in urine is infinitesimally small -- about one part per billion. Some say the results of this research come from in-vitro studies that one expert says can never fully explain human disease. Yet the real crux of the matter, according to another expert, is that we are surrounded by all sorts of chemicals that are pseudo-estrogenic -- not just BPA -- and it's the cumulative effects that we do need to worry about.

Sometimes drinking alcohol is healthy. And sometimes drinking alcohol is harmful. Studies show that one drink per day -- compared with no drinking at all -- can reduce a woman's risk for heart disease and stroke by 50 percent. And other research indicates that older women who drink moderately have better cognitive skills. But there are also downsides for women who drink even moderate amounts of alcohol.

Even as little as one-half drink per day increases the risk of breast cancer -- possibly because alcohol raises estrogen blood levels which can promote growth of breast tumors. Women are also more likely than men to become dependent on alcohol and to experience other consequences too -- including damage to the brain and other organs. One in 13 adults in the United States has a serious alcohol problem -- and at least six million of these adults are women. And because the risk for alcohol-related health issues increase with age, older women should be especially careful of their alcohol intake for the purpose of maintaining health and limiting the odds of a breast cancer diagnosis.

In the interest of balancing the healthful and harmful effects of alcohol, The Harvard Women's Health Watch suggests that women over the age of 65 limit themselves to one drink per day. Or less.

I wish I could reverse the damage I've already done to my skin after too much time spent in the scorching sun, in search of a tan. It's seems unfair that a tan is so temporary -- yet its damage is everlasting. And it seems crazy that so many people are still searching for a tan -- when it has become so clear that is it so harmful.

As many as 60,000 people a year die from too much sun -- mostly from malignant skin cancer -- according to the World Health Organization (WHO). About 48,000 deaths are caused by malignant melanomas, and 12,000 deaths are caused by other kinds of skin cancer. And 90 percent of these cancers are caused by ultraviolet light from the sun. Cancer is not the only side effect of sun exposure, though -- serious sunburn, wrinkling, eye cataracts, growths on the flesh of the eye, cold sores, and other illness can result from the sun.

We all need some sun -- the vitamin D that is produced in the body by the sun helps to prevent disease and immune disorders. But too much is dangerous and sometimes deadly. Yet almost all ill effects from the sun can be prevented. And the WHO has released a report that advises people to seek shade, to use sunscreen with an SPF of at least 15, and to stay out of tanning salons. The report operates under the premise that sunscreens be used not to prolong sun exposure but to protect the skin when exposure is unavoidable.