Guest blog by: Lillian Craggs-Dino, DHA, RDN, LDN, FASMBS-IH If you’ve had bariatric surgery—or are considering it—you probably know it’s a safe and effective treatment for obesity. But like any procedure, it comes with responsibilities, especially when it comes to nutrition. Certain side effects and complications can happen if diet and supplement guidelines aren’t followed closely. The good news? Many of these issues can be prevented with a little planning, the right tools, and ongoing support from your healthcare team. Why the Bariatric Diet Is So Important After surgery, your body’s needs change. The bariatric diet is designed to help you recover, maintain your health, and prevent future problems. The most important parts of this diet include: Focusing on protein—aim for at least 60 grams per day, and more if your care team recommends it. Drinking plenty of fluids—about 1.5 liters (or 50 ounces) daily. Sip slowly throughout the day, and avoid drinking while eating. Taking vitamin and mineral supplements every day, for life. Your body needs extra support after surgery, and skipping supplements can cause serious health problems over time. Getting regular lab work—at least once a year—to make sure your nutrient levels stay where they should be. Common Issues After Surgery—and How to Avoid Them Dehydration is one of the most common reasons people visit the emergency room after bariatric surgery, especially in the first few months. It happens easily because your new, smaller stomach can’t hold much liquid at once, and it’s important to avoid drinking while eating. To stay hydrated: Try different fluid temperatures—some people tolerate warm or cool drinks better. Switch up your beverages—herbal teas, flavored waters, or broths might be easier to sip than plain water. Take small, frequent sips throughout the day instead of large gulps. Track your intake throughout the day. Constipation is another common issue when you’re not getting enough fluids or fiber. If needed, your care team may recommend a fiber supplement or suggest over-the-counter options to help keep things moving. Vitamin and mineral deficiencies can also happen after surgery because your body has a harder time absorbing nutrients from food alone. Skipping your supplements puts you at risk for serious health problems, including: Bone thinning (osteoporosis) Low iron and anemia Nerve problems (neuropathy) Serious brain and memory issues (Wernicke’s encephalopathy) That’s why it’s so important to: Take your recommended supplements every day Get your lab work done regularly Work closely with your bariatric care team to adjust your routine as needed The table below offers a helpful starting point for vitamin and mineral supplements after surgery. But remember—everyone is different, so it’s important to follow a plan customized for you. Staying Healthy for the Long Haul Bariatric surgery is a powerful tool that can help you take control of your health, but it’s just one part of the journey. Preventing nutrition problems takes ongoing care, regular check-ins, and a strong relationship with your healthcare team. When you make your nutrition a priority, you’ll feel better, stay healthier, and protect the investment you made in yourself. Vitamin and mineral recommendations after surgery1 Supplement Total Dosage Adult multivitamin with iron Adult dosage, preferably a bariatric multivitamin Calcium 1,200mg for SG and GBP 1,800-2,400mg for BPD/DS Vitamin D 3,000IU B50 complex with thiamin (B1) > 12mg of B1 Extra iron 45mg Vitamin B12 500-1,000mcg, dissolvable Reference 1. Mechanick JI et al. Surg Obes Relat Dis. 2020;16:175-247.