Some clarification should be given here:

(1) It isn’t the FAT that leads to obesity, but the extra carbohydrate eaten, especially the white flour and potato (and, of course sugar).

(2) Good, saturated fat is twice as efficient as carbohydrate in terms of energy production. While we need a small amount of GOOD carbohydrate (eg green vegetables), we need more protein, and more fat again. In fact, a good breakfast of fried eggs (no toast), bacon with its fat (or a couple of lamb cutlets with the fat on) and a medium sized onion (for carbohydrate) will set you up for a late lunch and take away the urge to nibble on processed foods in the meantime (just try it!)

Fat will not make you fat. Excess fat to that required will burn off as energy, or be expelled from the body as ketones. Fat will not accumulate in the body as fat, but carbohydrates will! Fat has also been proven not to raise insulin levels, but again, carbohydrates will.

This way of eating is the way our healthy forbears ate – remember when obesity and cancer where virtually unheard of? Then came the monopolies of processed food and vegetable oils industry that convinced us that their foods were the healthy ones. Now, we (westerners) live with the highest levels of obesity, heart disease and cancer in the world.