Seems like the change in human body CO2 production is the least of the possible carbon impacts of decreased weight in the obese. From my experience losing five

Seems like the change in human body CO2 production is the least of the possible carbon impacts of decreased weight in the obese. From my experience losing five kg over the last couple of months, here are several additional possible effects. - When you weigh less, you consume less food, all things being equal, because it takes fewer calories to maintain a smaller body. - Smaller people require less clothing. - Smaller people also require less energy to move around in vehicles, and possibly allow the more comfortable use of smaller classes of vehicles. - There are probably many behavioral changes that come from weighing less, although it's nearly impossible to guess what the net effect of these changes are. Overall, I don't think these items add up to a significant change in the world carbon stance. It might be a nice marginal improvement -- for example, if there were a de-stigmatized and low-carbon-cost diet pill that simply reduced your hunger to a information-age-appropriate level. But it's not going to be enough to move the needle.