Yesterday I had my cholesterol levels measured. My HDL was better than usual — I have ten years of records — and the Total Cholesterol/HDL ratio was good, which is unusual for me. Thinking about what might have caused this, I realized that over the past few months, mainly because of Good Calories Bad Calories , I’ve shifted toward what I think of as a pre-agricultural diet: plenty of meat and greens, no grains, a little fruit. Long ago I stopped eating packaged food. That was the pre-factory diet — a hundred years ago. Now I’ve moved back in time two more log units (log unit = factor of 10).