[pyrocat]

I dropped 40 lbs in 5 weeks when I changed my diet to solely fruits and vegetables (no gluten or dairy). Dropped from 185 to 145 with no exercise. The point wasn't to lose weight but to eliminate most of the possible food allergies (and later slowly add them back, to figure out what you're allergic to), and as a side effect I lost 40 lbs. I felt perfectly healthy and I've managed to stick around 150 lbs since then, after switching back to a mostly normal diet (minus gluten). No idea why "2 lbs a week" would be the "safe" rate.