After topping out at a way too fat 344lbs 1/15/18, I started the medically supervised "HMR" diet through my local St. Jude hospital. It's a program run by HMR throughout the US. You can also buy their food/shakes online or at Amazon. Basically I eat around 1400 calories a day and do a lot of exercise (2,000 calories a week is their minimum but I routinely hit 6,000+). One year in today, and I'm down 102 pounds and feeling fantastic. I got back on the bike when I started and now routinely riding 150 miles a week on a good week. It's work, but it works. The diet is critical and "you can't out ride your fork!". I'm going for another 25lbs and then I'll go onto their maintenance plan. I've learned a lot, but most of all I've learned that I don't ever want to be carrying around that extra 100lbs again!