Protein is key to suppressing hunger. I have protein powder in my morning oatmeal and 8-12 oz of fish or lean meat (generally steamed without added fat) for lunch and dinner.
A new study in the journal Obesity shows that people are satisfied longer with a SOLID protein meal compared to same same meal made in a blender.
So, I generally avoid smoothies (plus they often have added sugar). Don’r drink your calories. Instead, eat real food!.