Eating intentionally helps maintain muscle mass, prevents nutrient deficiencies, and keeps you feeling your best as your appetite and weight adjust. Studies show they can reduce body weight by 10–20 percent when combined with healthy lifestyle habits. While these changes are incredibly effective for weight loss, they also require intentional eating — because when appetite decreases, nutrition can easily fall through the cracks. While this can be great for short-term weight loss, it can also mean:You’re not eating enough protein to preserve muscle. Vitamin & mineral gapsCommon deficiencies on GLP-1s include B12, vitamin D, iron, and calcium — especially if you’re eating less overall.