It is also used to make steroid hormones like
testosterone. Satturated fat intake correlates with increased
testosterone levels.
The A to Z study compared the Atkins (low-carb, high-fat) diet to the Ornish (low-fat, near-vegan) diet.
https://www.youtube.com/watch?v=eREuZEdMAVo
This study clearly shows that the Atkins diet causes greater improvements in pretty much all health markers, although not all of them were statistically significant:
The Atkins group lost more weight, 10.