Hello bob!
Very glad to help. These things are making a difference in my own eating. It's so easy now to spot what's good vs bad. If you think about it, it should be easy anyway in the past centuries.
In order to help others, here's a summary on the video:
- difference between observational and clinical studies, and how observational studies + errors in logic produced much confusion for decades, and still do. One of these wrong conclusions is that fat is bad for your health.
- in the 50's a bad scientist named Ancel Keys came up with the "Lipid Hypothesis" which says that a) saturated fat raises cholesterol, and b) high cholesterol clogs arteries. The lecturer explains the history and the bad science behing these wrong conclusions, which affects our health even today. He ignored several "black swans" (contrary evidence) and went ahead anyway. Some of the most known "black swans" related to fat and health are the eskimos, which live basically off fatty meat and live healthy.
- he went to explain how several studies had conclusions that aren't truth. Even with so much contradictions this theory ended up being "official" since the US Congress in 1970 created a report with a set of diet guidelines/recommendations:
- reduce consumption of fat
- switch from saturated fat to vegetable fats
- reduce cholesterol to 1 egg per day
- eat more carbohydrates, specially grains
Even with no consensus, and many scientists declaring before this committee that there we no scientific basis for these recommendations, including the American Medical Association, the committee decided they didn't have time to wait for all evidences and wanted to recommend something "now". The result: increase in diabetes type 2 and many heart diseases for the past several decades.
- US government supports the Lipid Hypothesis so if you are a scientist that disagrees, you have no funding, no job.
- Media pushing for "fat is bad", including Time magazine cover with eggs and bacon, article based in logic error.
- The French Paradox. French people eat TWICE as much saturated fat as the US, FOUR times as much butter, THREE times as much pork, 60% more cheese. Their heart disease rate is 1/3 of the US.
- The Swiss Paradox. Second-highest intake of saturated fat, second-lowest rate of heart disease.
- The Spanish Paradox. Past 30 years, saturated fat intake up, heart-disease rate down.
- Goes through some studies that refute Lipid Hypothesis' myth that "high cholesterol clogs arteries".
- Truth: sugar and refined carbohydrates are the real problem.
- The key: insulin. Keep blood sugar levels in the narrow range it's supposed to be.
- And then the most amazing part of this video: why 98% of diets fail? See an illustration on how insulin, blood, fat cells, belly fat, and many other things work. I never quite understood all of this, but with this illustration is so easy! It starts around at the 7m20 mark of video/part 4. I will never see food the same way after this!