MCT are from coconut oil. Coconut may cause people with heart conditions issues, but people with heart conditions should be talking to their doctor about any fat/oil in their diet.
I would also say if you are in ketosis or on a ketogenic diet then MCT oil is a source of energy to replace the carbs (within reason) but again only when in a calorie deficit.
This is a key statement that should never be overlooked. If you are on a carb restricted or ketogenic diet and your goal is to lose weight, there must be a caloric deficit.
Thank you for the post, resteemed.