According to New York City health officials, three-quarters of salt Americans eat comes from prepared and processed food, raising the risk of heart disease. Having led the ban on trans fats, New York City officials met with food makers and restaurants to discuss reducing salt in common foods like soup, pasta sauce, salad dressing and bread. New York has recruited health agencies and medical groups across the country with the goal of reducing salt consumption 20% by 2014. Although the food industry hopes salt reduction will remain voluntary, they have a healthy concern about government regulation.

According to neuroscientists, some people have a harder time resisting fattening foods because of \"conditioned hypereatig\", a drive to eat high-fat, high-sugar foods. Fat-sugar combinations light up the brain\'s dopamine pathway - its pleasure sensing spot - the same pathway that conditions people to alcohol and drugs. For approximately 70 million people with some degree of conditioned hypereating, the reward-anticipating area of the brain stays switched on even after the food is eaten. Thus the brain has to be retrained with rules, substitutions or temptation avoidance. Because there are thin hypereaters, there\'s a fat chance affected brains can be retrained.

According to a study done by researchers at the University of Nottingham in Britain, the researchers involved support the \"hygiene hypothesis\" - that the rise in asthma and allergies is linked to hyper-clean living; and if the immune system isn\'t properly primed in childhood, it can improperly react to harmless triggers like pollen and dander. When the researchers trapped wild mice, those not infested with parasites had more sensitive immune systems than parasite-infested mice. Those that believe in the hygiene hypothesis believe that when the immune system evolved, people were constantly infected by a variety of parasites. Today\'s immune systems may be calibrated for yesterday\'s parasites - a hypothesis that might bug many people.

According to allergy specialists, red eyelids can be caused by an allergic reaction to toluene sulphonamide formaldehyde resin in nail polish. People allergic to mugwort pollen, onion and chive are often allergic to celery. Sunlight can cause some people to break out in a red, itchy rash. People allergic to nickel can be allergic to their jeans because of the nickel-containing buttons, rivets and studs. They can also get rashes on their cheeks, ears and fingertips from the nickel in iPods and cell phones. Lately there seems to be a rash of new rashes.