Shaper, A. G. et al, 
"Cardiovascular studies in the Samburu tribe of Northern Kenya." 
American Heart JournalVol. 63 No. 4 (April 1962) 437-442. 

Perhaps we can learn some lessons from the highest fat diet known to science ( >65% by calories).  
Average total cholesterol below 125 and decreasing with age. Zero heart disease.
Thinest people in the world.
 
Ray Audette