CNNHealth iReporter Schmitt shed 419 pounds in mid-June . `` I have to constantly reinforce the fact that it was a lifestyle change for me , and not a fad diet or surgery that caused me to lose so much weight , '' he added . Schmitt lost weight by cutting back on food portions and exercising more . A physician nutrition specialist says Brent Schmitt lost his weight in a safe manner .
CNNHealth iReporter Schmitt shed 419 pounds in mid-June . Schmitt lost weight by cutting back on food portions and exercising more . A physician nutrition specialist says Brent Schmitt lost his weight in a safe manner .