Question in title
Replacing saturated fat with mono and polyunsaturated fats and unrefined complex carbs has been proven to lower cvd risk.Monounsaturated don’t cancel out saturated fats if your still eating a high proportion of your calories from Sat fat, but if they reduce the proportion of saturated fat in your diet it will benefit your overall health
There are some meta-analysis studies that show dairy, eggs and red meat don’t cause cardiovascular disease nor they increase LDL cholesterol.
But there are also studies which show the opposite.It’s best to consume these foods in moderation, there is no need to limit them, they can be great part of balanced diet.
No. Mono is neutral - tends to keep LDL the same. Saturated fat increases LDL. The fat that decreases are polyunsaturated (PUFA). So, PUFA is the oil that lowers/counters the rise induced by saturated fat.
Trans fat - worse increase in LDL
Saturated fat - moderate increase in LDL
Mono - LDL tends to stay the same
PUFA - lowers LDL in the body
This will answer the vast majority of questions on this topic:
https://www.ahajournals.org/doi/10.1161/CIR.0000000000000510