Nuts and Seeds Can be a Great Protein Source in Your Smoothie - Phase 3 HCG Diet Smoothie Believe it or not, nuts and seeds are a high source of nutrition. I love putting pumpkin seeds, walnuts and chia seeds in my smoothies to add some protein. Avocado seeds ground are also a wonderful way to add add some nutritional density to your cup! I highly recommend our phase III HCG Diet patients give this a try! With 2 tbsp chia seeds, 2 tbsp walnuts and 2 tbsp pumpkin seeds you have just added a whopping 18 grams of protein to your smoothie! Health Benefits of Many Nuts and Seeds Most of the antioxidant properties of pumpkins, sunflowers, chia plant and avocado are found in the seed. The seeds are also ...