“It’s important to realize that in 1970, when the AHA started telling Americans to cut back on total fat, this regime had not been tested in clinical trials. All those famous big, early trials had been on the “low-cholesterol,” or “prudent” diet – high in vegetable oils and low in saturated fats – but when it came to reducing fat overall, as the AHA was now advising, the evidence was nonexistent.”
