eating less carbs in general ... or have you replaced your wheat consumption with other starches
Some of each, probably. In many contexts I've replaced wheat consumption with other starches. Oatmeal for breakfast instead of toast, rice instead of macaroni, potato chips instead of pretzels, that sort of thing. Other than wheat I don't make a conscious point of avoiding any food in particular; I eat what I want when I want.
Wheat Belly's theory is that there are substances in modern wheat varieties which overstimulate the appetite. When you consume less wheat, your appetite lines up better with what your body actually needs. My own experience has matched the theory. When I'm consistent about avoiding wheat, the weight gradually comes off. If I'm not consistent, things plateau.
I've been losing one or two, sometimes three pounds per month for over two years, with almost no sense of effort or deprivation. The change has been so gradual that people who see me all the time have hardly noticed, but I do get comments from people who haven't seen me for a while.
I can't say I've eliminated wheat completely ... social life interferes with that ... but I've probably cut back 90%.
@ergo ... I was born to the imperial system and not all parts of my brain have made the switch to metric.