I've been sick for the past few weeks, and my relationship with food is becoming very complicated. That whole food equals pain thing is really getting to me. Plus, there's a limited overlap between the gall bladder diet and the diverticulitis diet (you can't eat any fiber during a flareup). Now, after a week eating canned soup, I read this:

Is it safe to eat canned foods?

That’s a question worth asking after a new study found a huge spike in urinary levels of the chemical bisphenol A – commonly known as BPA – in a group of volunteers who ate canned vegetable soup for several days. BPA, which has been linked to a variety of health disorders, is used in the lining of many food and beverage cans.

The results suggest BPA is being absorbed by the canned food and then ingested by consumers.

“We were very surprised by the numbers,” said the senior author of the study, Karin Michels of Harvard Medical School in Boston. “It makes you feel a little uneasy about cans.”

The experiment involved 75 participants. Half of them were asked to eat a 12-ounce bowl of canned vegetable soup at lunch for five consecutive days. After a two-day break, they consumed the same-sized serving of fresh vegetable soup for five lunches in a row. The other volunteers did the experiment in the reverse order – starting with five days of fresh soup, followed by five lunches of canned soup.

Urine samples were collected on several occasions, usually a few hours after the noon-time meal.

The analysis revealed that when participants ate the canned soup they experienced more than a 1,000 per cent increase in their urinary concentrations of BPA, compared to when they dined on fresh soup.