Australian television personality and environmentalist Steve Irwin, known worldwide as the Crocodile Hunter, died of cardiac arrest after being hit by a stingray barb to the chest. While filming an underwater documentary off the Great Barrier Reef on Australia's northeast coast, Irwin was diving off his boat Croc One near Batt Reef when the incident occurred.

Irwin was known for his boldly adventurous antics and outrageous stunts with animals during the Crocodile Hunter wildlife documentaries that aired on the Animal Planet Channel and for making the now widely-used phrase Crikey! famous. He was also an avid environmentalist. Both entertaining and educational, Crocodile Hunter became a television show enormously popular among all age groups, and one the whole family could watch together.

From poisonous snakes to chomp-snapping crocodiles, he was a one-of-a-kind character who brought interest in wildlife and the environment to a global viewing television audience in the most engaging manner.

He is survived by his American wife Terri, from Oregon, and their daughter Bindi Sue, who is eight-years-old, and son Bob, who is two-years-old. Steve Irwin was 44.

New guidelines for emergency medical technicians on when to cease resuscitation of heart attack victims could spare many families added grief and expense, according to a recent New England Journal of Medicine report. The new guidelines would not apply to EMTs with advanced life-saving training or to paramedics.

Two-thirds of all cardiac arrest victims die on the scene, but are usually transported to the hospital in an effort to save them anyway. Only one in 500 patients survived a heart attack once taken to the hospital for resuscitation, reports statistics from the University of Toronto. New guidelines would decrease the amount of patients transported to emergency rooms by EMTs from 100 percent to 37.4 percent.

One theory is that families of victims would experience more emotional closure if an unsuccessful resuscitation was fully observed -- confidant that everything that could be done was done -- and that they would be saved the distress of an agonizing half-hour in a hospital waiting room wondering if the patient would survive.

According to a Leeds University study in Britain, women who work long hours are more likely to react negatively to stress than their male counterparts. Work stress causes women to eat unhealthy food, drink coffee and smoke more.

Researchers claim that women are more vulnerable to work stress and thus become 'emotional eaters'-- reasoning that women try to escape themselves and their experience of stress by turning their attention to food. Male workers intake of caffeine, nicotine and calories are apparently not affected by working long hours. Perhaps some form of self-stress-management technique could help these women avoid the consumptive disturbance caused by overwork-- so they can avoid the contribution the extra calories and stress hormones make toward heart disease.

A recent Canadian study documented higher blood pressure in workers with high job strain and low levels of co-worker support. High job strain is defined as work that is high in mental and emotional demand, with little independence or feeling of authority in decision making.

Researchers followed nearly 7,000 workers for 7.5 years. More men than women had high blood pressure associated with job strain, and those that did not feel encouraged or supported by their bosses or fellow workers were particularly stressed. The authors emphasize that job strain could be lessened if employers loosened up the methods of achieving results, allowing employees to be more independent in choosing how they attained success. In addition, deadline pressure need be lessened and stimulating opportunities for employee growth could counter-balance job stress.

Although Pirates of the Caribbean: Dead Man's Chest actress Keira Knightley's grandmother and great-grandmother suffered from anorexia, the ultra-thin young woman insists she does not suffer from the same disease. When she showed up at the London premiere of the new Pirates of the Caribbean movie in a low-cut, backless bronze Gucci dress, she was confronted with questions about her health regarding her waif-like appearance.

Knightley assured the reporters that she is fully-aware of the signs and dangers of anorexia because of her family history with the disease and that she does not have an eating disorder. She would certainly not be the first Hollywood actress to come under suspicion for anorexia, as it seems a current trend to be as thin as possible these days. But anorexia is not simply a matter of being underweight, it is a disease that can kill.

According to the Mayo Clinic, heart disease is the most common medical cause of death in people with severe anorexia. Anorexia can cause irregular heart rhythms; smaller heart muscles because the heart muscles lose size during starvation; drop in blood pressure and an imbalance of minerals essential to good heart health.