WASHINGTON

ON the second day of my chemical-detox diet, I was very hungry. I’d been eating like a rabbit, all carrots and greens that I’d gathered, barehanded, from the baskets of the farmer’s market, no gloves or plastic bags allowed. I cooked up some quinoa that I bought packaged in paper from the supermarket sometimes known as Whole Paycheck. I was effectively a vegan because I couldn’t find meat or cheese that wasn’t wrapped in plastic, and I didn’t have access to accommodating livestock.

My 7-year-old daughter and I were participating in a pilot study conducted in 2011 by the Silent Spring Institute and the Breast Cancer Fund (a follow-up study was published later that year in the journal Environmental Health Perspectives). We had urinated into some glass containers a few weeks earlier, back when we were “normal” Americans, and now we were spending three days trying to reduce our exposure to plastics before supplying our urine again.

We wanted to see what it would take to nudge down our bodies’ levels of a handful of common chemicals with the potential to mimic or disrupt hormones, including phthalates (found in some plastics and added to products like lotions to bind fragrances), triclosan (an antibacterial ingredient in many soaps, toothpastes and cutting boards) and bisphenol A (or BPA, a plastic-hardener and epoxy additive that may affect children’s brain development and that some believe may be linked to breast and prostate cancers).

Manufacturers have phased BPA out of some products, and last year, the Food and Drug Administration outlawed its use in baby bottles and sippy cups. This month Suffolk County, N.Y., banned certain cash register receipts that carry it.