I have been on an ultra-low carb diet since January of 2011. This was inspired by reading Dr. Gary Taubes' book "Why we get fat" http://www.amazon.com/Why-We-Get-Fat-About/dp/0307272702. I really enjoyed it because it explained the inner workings of blood and fat, with a focus on how carbs adversely affect your insulin levels. My wife was diagnosed with Type-2 diabetes, so I became very interested in this topic.
DIET: I lost over 30 lbs in the first 6 months, I then made the mistake of allowing "Net carbs" into my diet. (Net carbs are calculated by subtracting dietary fiber and sugar alcohols from the total carb count.) I have gained about 7 lbs. back since last summer, but in the last month or so I have cut out net carbs again. My diet is currently a high-fat, high-protein, ultra-low carb diet. I eat primarily meat, eggs, cheese, and green vegetables. No fruit, no potatoes, no grains, no pasta, no milk, no sugary snacks. I avoid prepackaged food and anything with an "-ose" at the end like sucrose, glucose, fructose, maltose, etc. I have recently cut out all artificial sweeteners as well, so no diet sodas either, I only drink water, unsweetened tea and black coffee. Atkins bars are still a weakness, which I indulge in once or twice a week. When i need a "sweet" fix, I eat peanut butter on celery or an occasional small piece of dark chocolate (70%+).
EXERCISE: I am a computer programmer so I tend to sit a lot during the day: read that as saying I get very little exercise, which was compounded by the fact that I didn't play golf from August 2011 to April 2012. I've started playing again and walking some. I also bought a pull-up bar and will be incorporating that and a push-up regimen into my daily routine (I start a new job working from home on Monday). Thanks to the Army I absolutely hate running, but I'm tempted to start again.
SUPPLEMENTS: I also started taking an assortment of supplements: Krill Oil, Fiber, Vitamins C & E, l-Arginine, Saw Palmetto, Zinc, and Potassium. I recently started taking "Protandim", a proprietary supplement aimed at rebooting your natural defenses against free radicals.
HEALTH: While I would love to continue losing weight (another 30 lbs would be nice) my real goal is sound health. My blood pressure has dropped from 160/105 to 132/92 (this morning) and has been as low as 123/85. My blood sugar used to hover around 100, now it stays around 80. I haven't had blood work done in forever, so I need to get that done to check my cholesterol. Overall, I have felt much much healthier the last year, and I barely got a cold this winter which is very unusual for me.