Hi Steven. Can you supply some scientific data to help us understand why there are some people who follow a very strict keto diet but fail to lose weight (assuming for the moment they've followed it strictly, do not have excess caloric intake) - and with data that you consider drawn from studies conducted using good methodology?

For example, you've written previously that you consider David Ludwig at Harvard a reliable source. Do you think he's wrong about the Harvard "Healthy Eating Plate"? If so are there any studies you consider legitimate that you could point to that support your critique? https://www.hsph.harvard.edu/nutritionsource/healthy-eating-plate/