In the same vein, whenever you drastically change your diet, it can cause some digestive distress. Moreover, some keto-friendly snacks use artificial sweeteners and sugar alcohols that can upset your stomach, so be sure to avoid those if you're sensitive to them. "What the early studies have shown is that there are early benefits in terms of weight loss and glucose control," Gardner said. "But in the few studies that have gone on for 12 months, the benefit in comparison to other diet approaches diminishes and is no longer statistically significant."
