Sticking with the plain, unsweetened option is your best choice as it will have no added sugars, thickening agents, and the like.
Compared to virtually any other yogurt, Greek yogurt has a higher protein content. Unsweetened Greek yogurt is tart and contains less sugar because the lactose-containing whey is removed through straining. Greek yogurt is also a great source of vitamin B-12, calcium, and probiotics. Probiotics restore and add to your gut microbiome. Watch out for low-fat, “greek-style”, and flavored yogurts. Sticking with the plain, unsweetened option is your best choice as it will have no added sugars, thickening agents, and the like. Make it sweet by adding your own berries!