This is the essential thing. I do prefer fat over carbohydrates and I am quite healthy with that.
"After years of being told, and telling others, that
saturated fat clogs your arteries and makes you fat,
there is now mounting evidence that eating some
saturated fats may actually help you lose weight and
be good for the heart"
this saying is true for healthy people. definitly not true for overweight people fed with corn syrup colas where saturated fats can be lethals paired with the high carbohydrate intak
Although I'm very hesitant to put too much faith into anything in the area of nutrition and health based on a single study, I do recall reading a longitudinal study a few months ago where they looked as various carb/fat/protein ratios in diets and basically found that both high carb/low fat/high protein and low carb/hight fat/high protein diets promoted weight loss and increased overall health, and that high carb/high fat/low protein diets tended to cause a lot of health problems and participants either gained weight or lost weight at a much lower than expected rate based on their calorie deficit.
Anecdotally, as a person who has struggled to control my weight (420lbs -> 100lbs -> 200lbs -> current back down to around 190lbs), I found that a low carb/high fat/high protein diet did help me lose weight and my vitals (based on blood pressure, resting heart rate, and CBC with metabolic panel) were extremely good during that time (although I suffered from bradycardia and low blood pressure for a time), but the high caloric density of fat made it very difficult to feel satisfied with the amount of food I was eating to maintain a consistent calorie deficit. I'm losing weight a little more slowly on a high carb/low fat/high protein diet, but my vitals are still good (bp and heart rate are more normal than the high fat diet, but I'm struggling with anemia now) and it seems more sustainable for me in the long run.
I think they were referencing diets that are generally higher in fat and carbs rather than meaning that they are worse eaten together at a specific meal. I have seen a study that supported that, but in all of science and nutritional science specifically a single study (that I can't find a reference too right now unfortunately) is about as reliable as "my cousin's brother in law's dog told him that..."
