I went low carb (not any particular named plan) starting on Valentine's Day.
In 15 weeks, I'm done 23.5 lbs.
BUT the best part is that after about 10 days I realized that my joints had stopped hurting! My joints feel better than they have in 15 years! I went looking online to see if the change in eating could have had that impact and found that both sugar and wheat tend to cause quite an inflammatory reaction in the body.
My way of eating does not include sugar, grains, bread, pasta, rice or potatoes.
I eat eggs, fish, meat, cheese, butter, heavy cream, sour cream, full fat yogurt, non-starchy veg, small amounts (because of sugar) of berries, and small amounts (because of the possibility of eating a LOT) of nuts.
I only eat when I'm hungry and then eat only to satiety (which is easy, because my meals are very rich).
The key is to stay away from carbs and don't be afraid of fat!
I can go many hours without needing to eat, because I don't have that whole blood sugar roller coaster thing going on. It is really quite amazing!
Have fun!