I'm usually glad to peruse tomorrow's New York Times headlines when it comes to food as I did last night. I say usually because last night the news I learned was rather disturbing. The FDA has issued an alert about the safety of five types of farm-raised seafood imported from China. It seems that multiple tests showed contamination from carcinogens and antibiotics.

The five types of seafood in question are shrimp, catfish, eel, basa (a type of catfish) and dace (Chinese mud carp). These fish will have to be tested before they can be sold in the U.S. The FDA noted that there's no immediate health threat, but that prolonged exposure could cause health problems. Somehow that doesn't make me feel very safe, probably because I've consumed more than a few cans of canned dace with black bean sauce in my day. And the ban may not be such good news for fish eaters in general, either. Chinese seafood accounts for 21 percent of all seafood imports. Shrimp lovers may be hit especially hard since it's the number one seafood imported from China.

No additives, no hormones. no chemicals... do these phrases mean what you think they mean? The Diet Detective has a little guide to help you figure out what these designations mean, and it isn't always what you think.

• No antibiotics - Some antibiotics are given to treat sick animals, and given to the whole herd when one animal is ill. The "subtheraputic" use of drugs to boost animal growth is the main concern here, and labeling usually differentiates between the two. Organic farmers cannot use any animal for organic products that has been treated with antibiotics, so they are simple separated from the herd if they must be treated.
• No chemicals - This label means nothing (or anything at all), since there is no USDA or FDA definition of the term.
• No additives - There are 2,800 potential additives for meat in the US and the labeling applies to what was added to the meat, such as colorings and flavorings - not what was fed to the animal in the first place.
• No hormones - Hormones are not allowed in the production of pork and poultry. Period. Cows can be given hormones to speed their growth, though, so if the label specifies that "No hormones [were] administered," the cow probably lived a healthy and natural life.

The Detective notes that because the regulations are in place, doesn't mean that they are always followed. In many cases, there is little in the way of follow-up to prove that all producers are living up to their labels. Many suppliers, however, do live up to the standards set by law, if not to a higher standard of their own. Labeling may not be fail-safe, but it's still more reliable than the alternatives of no labels or completely unsanctioned ones.

Food poisoning often occurs after eating a meal in a large, social setting such as a picnic, cookout, or cafeteria. According to the U.S. National Library of Medicine (NLM), foods in these settings are often prepared early and left unrefrigerated for long periods, allowing bacteria to form on the food. Food poisoning symptoms typically begin within two to six hours after eating the contaminated food. Signs of food poisoning are most often vomiting, fever, chills, headache, bloody diarrhea, weakness, and severe abdominal cramps. Treatment from a doctor is rarely necessary, unless dehydration occurs, says the NLM. To prevent dehydration, drink plenty of fluids, but avoid milk or drinks with caffeine. You should also avoid solid foods while severely nauseated. And antibiotics aren't usually needed to manage food poisoning.

I'm sure most of us have experienced food poisoning at some sort of summer get-together. We likely pinpoint the sickness to something we ate, often that strange tasting potato salad that looked good on the outside. The association of our discomfort with eating certain foods may then last a lifetime. Just as important, however, we may experience some sort of generalized bad feeling toward an activity, such as future church socials or family reunions. I wonder if anyone can trace the loss of their religious faith to a rancid salad... Just thinking.

The Institute of Food Technologists, a nonprofit group with over 22,000 members, studied over 20 years' worth of past research on antibiotics and antimicrobial resistance with a group of food scientists and microbiologists and came to the conclusion that using antibiotics to treat animals is not necessarily harmful to humans. The study was intended to provide a contrast to the claims of organic groups that promote antibiotic free foods as being the healthiest option.

While the results will be officially released tomorrow, scientists emphasize that they are not dismissing "concerns about overuse of antibiotics or antimicrobials," which can certainly be unnecessary and their overuse could even lead to the production of new, antibiotic-resistant strains of bacteria. But the fact remains that the health of many animals would suffer if they were never treated with antibiotics; the cost of meat could increase, perhaps to levels that would be prohibitively expensive for some, if food production dropped and the supply of meat on the market went down.

The study does not say that antibiotics and antimicrobials are unconditionally safe, as they can certainly be overused or misused, but it does serve to reinforce the idea that food production doesn't exist in black and white or good and bad, even if there is a hard line between organic and non-organic.

British supermarket chains, such as Asda, Tesco, Morrisons, Sainsbury's and Waitrose, are rethinking their pork supplier. The Polish pig farms that produced much of the supermarket pork products have been condemned for "'appalling' animal welfare practices."

The farms in question are in Poland and have been run by Animex, a subsidiary of the American company Smithfield Foods, since 2002. An undercover investigation revealed industrial factory farms, conditions where hundreds of pigs were crammed into light-less barns with dead companions rotting underfoot. The investigation also found that "powerful cocktails of drugs," including a cocktail of antibiotics that is banned or considered to be a growth-promoter in other countries. One such drug is Tylbian 20%, a form of the growth promoting drug Tylosin, which was banned by the European Union in 1999. Local residents showed investigators large open-air cesspits of pig waste and farm detritus that included syringes and needles.

Waitrose has already pulled the products supplied by this producer. No wrong-doing has been shown on the part of Smithfield Foods and a Smithfield representative denied knowledge of such conditions, assuring the public that it would investigate thoroughly.