I've made a new video against low-carb diets

[LadyForCamus]

No. This has never been demonstrated in a clinical trial. Coconut oil has been demonstrated to increase LDL-cholesterol, which is a bio marker for heart disease risk. There’s a difference. Also, some meta-analyses have found evidence that virgin olive oil may actually improve lipid profiles, but the research is far from settled, which is my point. You’re oversimplifying big time. And like any other food/nutrient/drug, dosage and frequency matter. There’s a difference between cooking with a table spoon of olive oil once a month and dousing your salad with it seven days a week. Anyone who says “Food X is bad for you” needs to stay in their lane, as @arewethereyet mentioned.

But making a more rigorous study testing whether coconuts cause heart disease in humans is unethical, isn't it? And, in the absence of better information, it is reasonable to assume coconuts do indeed cause heart disease, right?

Yes, it would be unethical, and no, we don’t jump to a scientific conclusion in the absence of better information. That’s the opposite of how science works. We say “we don’t/can’t know for sure.” Especially considering the fact that not everyone with elevated LDL levels will eventually develop heart disease. That’s why it’s not scientific to say “food X causes disease Y.” We normally say nutrient X can raise bio markers that are associated with certain disease risks. If I eat one coconut, will I develop heart disease? Two? One a week for six months? Three a week for six months?