Type of fat makes a difference. My husband has been on a keto/carnivore diet for 3 years and the only fat he eats is animal/natural but a lot of it. He lost 65 lbs, and his glucose, bp, cholesterol and all other blood work numbers are now perfect. Before he could never get his cholesterol numbers down even with meds. His heart is great, arteries are clean, allergies are minimal, energy through the roof, and he quit snoring at night.
In the beginning his doctor was skeptical, and concerned, and had him come in every 3 months for blood work. The diet initially raised his cholesterol, but after a year, it dropped substantially. 3 years later this same doctor says to keep doing what he’s doing.
My son went on it as well, but he has to take some time off of it because he looses too much weight. His blood work numbers also are great, and his migraines and epilepsy are better controlled. He is on 3 weeks, off 1.
I tried it but cannot because of a health condition, but I do limit my starches to 1 potato or 1 cup rice/day. I have seen benefits from that.
The American food pyramid is upside down if you ask me.
Quit snoring at night? That alone would sell books! But he likely is eating less calories overall due to feeling full bcz of the fat he consumes, while I believe a in the long run a balanced diet is best.
He causeth the grass to grow for the cattle, and herb for the service of man: that he may bring forth food out of the earth; And wine that maketh glad the heart of man, and oil to make his face to shine, and bread which strengtheneth man's heart. (Psalms 104:14-15)