I’ve had a few reader questions in response to last week’s article about fat and fad diets along the lines of:

I know someone on the keto diet that has lost 30 pounds. It really seems like a diet that works. Thoughts?

The keto diet encourages its adherents to get the bulk (80 to 90 percent) of their caloric intake from fat. Essentially, it is an extreme version of the Atkins™ Diet. By significantly limiting the caloric intake of carbohydrates, the body is deprived of its normal fuel source (glucose) and forced to turn its fat stores into ketone bodies (i.e., ketosis).