Green smoothies are great, no doubt about it! But it's important to rotate raw green leafy vegetables families, to avoid alkaloid buildup and provide a variety of nutrients.
When making green smoothies, juicing or preparing salads with raw green leafy vegetables, simply every few days, change your family. They include:
Cruciferae (kale, watercress, rocket, cabbage, pak choi, spring greens, collard greens). They contain goitrogens, which may interfere with the thyroid function;
Amaranthaceae (spinach, Swiss chard, beet greens). The over accumulation of oxalates may increase the risk of kidney stones;
Asteraceae (Romaine lettuce, leaf lettuce, dandelion greens);
Apiaceae (Parsley, celery, coriander).