This catchphrase was first used in the 1980’s.

Their diet includes a high amount of saturated fats.

But, they experience a low incidence of coronary heart disease (CHD).

The widespread belief is that the more saturated fats one consumes, the greater incidence of CHD.

How can this be?  There are two schools of thought.

One, the link between these two might have mitigating circumstances.

Perhaps, something in their lifestyle. Or, the link between is not valid as thought.

A third thought is perhaps, the discrepancy lies in the data collection method.