Following a healthy diet while taking GLP-1’s will help maximize the benefits and enhance the effectiveness of the drugs.   It can also help maintain lean muscle, protect your bones, prevent nutritional deficiencies and set you up for long-term success!

Choose Nutrient-Dense Foods

Since your appetite will be reduced, it’s important to choose nutrient dense foods! Focus on whole, unprocessed foods including vegetables, fruits, whole grains, lean protein, nuts and legumes, healthy fats

Eat small, frequent meals

Healthy snacks between meals may help (i.e. fruit, nuts, yogurt, etc.)

Keep portion sizes small. (You will get full quickly)

Keep protein front and center

When you lose weight quickly (from medications or any other reason), you lose muscle along with fat. The goal is to keep as much muscle as possible. Good sources of protein:  Eggs, seafood, chicken, turkey, lean cuts of beef (sparingly), cottage cheese, tofu, protein shakes, legumes

Eat first. Drink later

This way you’re not filling up your stomach with liquid and not eating enough.

Avoid skipping meals 

 If you can’t eat an entire meal, split it into two smaller meals eaten a few hours apart.

Eat dinner early

Give your body at least two hours to digest the food before going to bed.

Hydrate

Be sure to get 8-10 cups of water, seltzer, or other unsweetened beverage of your choice each day so you don’t become dehydrated.

GLP-1s can come with side effects. Here are tips from our nutritionist team to handle them:

Nausea: 

• Why it Occurs: GLP-1 agonists slow down stomach emptying, which can lead to nausea as food remains in the stomach longer. 

• When it Typically Occurs: Most commonly during the first few weeks of treatment and during dose increases. 

• How to Handle It:  

• Start with a low dose and gradually increase it. 

• Eat smaller, more frequent meals. 

• Avoid high-fat and fried foods. 

• When to See a Provider: If nausea persists beyond the first month or becomes severe. 

Vomiting: 

• Why it Occurs: Vomiting can result from nausea and the body’s response to slowed gastric emptying caused by GLP-1 agonists. 

• When it Typically Occurs: Often in the first few weeks of starting the medication. 

• How to Handle It:  

• Stay hydrated by sipping water. 

• Go for for smaller meal portions instead of larger meals. 

• When to See a Provider: If vomiting is frequent, persistent, or leads to dehydration. 

Diarrhea: 

• Why it Occurs: GLP-1 agonists can alter gut motility, which may lead to diarrhea. 

• When it Typically Occurs: Intermittently throughout treatment, more common in the early stages. 

• How to Handle It:  

• Stay hydrated with water and electrolyte-rich fluids. 

• Follow a bland diet (BRAT: bananas, rice, applesauce, toast) until symptoms improve. 

• Avoid dairy products and high-fat foods. 

• When to See a Provider: If diarrhea persists or severe dehydration occurs. 

Constipation: 

• Why it Occurs: Slowing of the digestive system can lead to constipation in some people. 

• When it Typically Occurs: Often noticed after treatment is started. 

• How to Handle It:  

• Increase fiber intake, including both soluble and insoluble fiber. 

• Stay hydrated. 

• Engage in regular physical activity. 

• When to See a Provider: If constipation lasts over a week or is accompanied by severe abdominal pain. 

Fatigue: 

• Why it Occurs: Fatigue can occur from dehydration, nutritional deficiencies, or the body’s adjustment to blood sugar effects. 

• When it Typically Occurs: At any stage of treatment, depending on diet and nutrient intake. 

• How to Handle It:  

• Eat nutrient-dense foods, avoid skipping meals. 

• Prioritize sleep and stress management. 

• When to See a Provider: If fatigue persists or worsens. 

Headaches: 

• Why it Occurs: Headaches can be triggered by dehydration, blood sugar fluctuations, or stress as your body adapts to the medication. 

• When it Typically Occurs: Early weeks of treatment or during dose adjustments. 

• How to Handle It:  

• Stay hydrated. 

• Monitor your blood sugar levels if advised by your healthcare provider 

• Consider over-the-counter pain relief if needed, but consult with your provider first. 

• When to See a Provider: If headaches are severe, persistent, or accompanied by other usual symptoms like vision changes. 

Muscle Loss: 

• Why it Occurs: Weight loss from GLP-1 agonists can include loss of muscle mass, especially if protein intake and physical activity are inadequate. 

• When it Typically Occurs: Can start as early as in the first few months of treatment, especially during rapid weight loss phases. 

• How to Handle It:  

• Engage in strength training exercises to help preserve muscle mass. 

• Ensure adequate protein intake, focusing on lean protein sources. 

• Consider discussing with a dietitian or nutritionist to tailor your diet plan. 

• When to See a Provider: If significant loss of muscle tone or muscle weakness occurs. 

Bone Loss: 

• Why it Occurs: Rapid weight loss and reduced nutrient intake may contribute to bone density loss. 

• When it Typically Occurs: more likely to become a concern after several months of treatment, especially if dietary calcium and vitamin D intake are low. 

• How to Handle It:  

• Increase calcium-rich foods and vitamin D intake. 

• Engage in weight-bearing exercises to strengthen bone. 

• When to See a Provider: If you experience bone pain or have a have a history of osteopenia or osteoporosis. 

Eating too little while on GLP-1 receptor agonists can pose several risks. While these medications help control appetite, maintaining a balanced diet is crucial for overall health. To mitigate these risks, it’s important to work with your healthcare provider or a registered dietitian to develop a balanced eating plan that complements GLP-1 therapy.  Here are some potential dangers of inadequate calorie intake: 

• Nutrient Deficiencies: Consuming too few calories may lead to a lack of essential vitamins and minerals, such as vitamin D, calcium, iron, and B vitamins. These nutrients are vital for overall health, including bone strength, immune function, and energy levels. 

• Muscle Loss: A significant reduction in calorie intake can cause the body to break down muscle tissue for energy, leading to muscle loss. This can negatively impact your metabolism and physical strength. 

• Slowed Metabolism: Severely restricting calories can slow down your metabolic rate. A lower metabolism can make it more difficult to sustain weight loss and may lead to feelings of fatigue. 

• Low Energy Levels: Inadequate caloric intake often results in decreased energy, leading to fatigue and weakness that can affect daily activities and overall well-being. 

• Cognitive Impairments: Insufficient calorie consumption can impact brain function, causing difficulties with concentration, memory, and cognitive performance. 

• Digestive Issues: Extremely low calorie intake can worsen gastrointestinal problems, such as constipation or nausea, which can be particularly challenging if you’re already experiencing side effects from GLP-1 medications. 

• Electrolyte Imbalance: A very low calorie diet can disrupt your electrolyte balance, which is crucial for muscle function and heart health. This imbalance may lead to symptoms like dizziness, irregular heartbeat, and muscle cramps. 

• Mental Health Effects: Restricting food intake can affect your mood, leading to irritability and even depression. A balanced diet is important for maintaining emotional well-being. 

• Hormonal Disruptions: Insufficient calorie intake can affect hormone levels, including those that regulate hunger, metabolism, and reproductive health. 

GLP-1 (glucagon-like peptide-1) medications are commonly used to manage blood sugar levels and aid in weight loss. However, it’s important to be mindful of bone health, as weight loss and changes in metabolism may impact bone density. Maintaining bone density is an essential part of overall health, especially when using GLP-1 medications. By focusing on a balanced diet, regular weight-bearing exercise, and avoiding habits that weaken bones, you can support your bone health and reduce the risk of fractures. 

Why Bone Density Matters 

Bone Health: Maintaining bone density is crucial for preventing fractures and osteoporosis, particularly as we age. 

GLP-1 and Bone Density: Some studies suggest that rapid weight loss and certain medications might influence bone health, making it essential to take preventive measures. 

Strategies to Maintain Bone Density 

Balanced Diet

Calcium: Ensure adequate intake of calcium through dairy products, leafy greens, fortified plant-based milk, and nuts. 

Vitamin D: Support calcium absorption with vitamin D from sunlight exposure, fatty fish, and fortified foods. 

Protein: Include enough protein in your diet to support bone health, found in lean meats, beans, and legumes. 

Weight-Bearing Exercise 

Types of Exercise: Engage in weight-bearing activities like walking, jogging, and resistance training to strengthen bones. 

Regular Routine: Aim for at least 30 minutes of weight-bearing exercise most days of the week. 

Avoid Bone-Weakening Habits 

Limit Coffee: Taking coffee together with calcium-containing foods can reduce the calcium absorption by the body. 

Limit Alcohol: Excessive alcohol consumption can weaken bones. 

Avoid Smoking: Smoking is detrimental to bone health and can increase fracture risk. 

Monitor Bone Health 

Regular Check-ups: Discuss bone density monitoring with your healthcare provider, especially if you’re on GLP-1 medications. 

Bone Density Tests: Consider periodic bone density tests to assess bone health and make necessary adjustments. 

Supplement Wisely 

Calcium and Vitamin D Supplements: If you’re unable to meet your needs through diet alone, supplements can help. 

Consult Healthcare Providers: Always check with your healthcare provider before starting any new supplements. 

Consult Your Healthcare Provider 

Personalized Advice: Your healthcare provider can offer tailored advice on managing bone health while using GLP-1 medications. 

Adjustments: They can also help adjust your medication or lifestyle to better support bone density. 

While taking GLP-1 medications, there are certain foods that make it harder for your medication to do it’s job and may contribute to side effects.

Here is a list of foods you should avoid or limit:     

Sugary foods and beverages  

Including juices, soda, sugary coffee drinks, energy drinks, candy, cake, cookies, baked goods.  These foods can lead to rapid blood sugar spikes and may counteract the benefits of GLP-1’s.   

Ultra-processed carbohydrates  

Including white bread, white rice, white flour, pasta (that isn’t whole grain), crackers.  These foods act like sugar in your body and also cause blood sugar spikes that can decrease the medications effectiveness. 

Fried, greasy foods 

Such as burgers, french fries and bacon can exacerbate digestive issues which are a common side effect of GLP-1’s. 

Full fat dairy products  

Such as whole milk, heavy cream, full-fat cheese, butter, ice cream  may cause additional gastrointestinal distress for someone on GLP-1’s. 

Alcohol 

Alcohol irritates the stomach and increases the chances of stomach upset, plus in combination with GLP-1’s can cause fluctuations in blood sugar levels. 

The appetite-suppressing effects of GLP-1 drugs can also lead to reduced food intake, potentially resulting in nutritional deficiencies. In this blog, we’ll explore the key nutrients that might be at risk and how to address them. 

Vitamin B12 Deficiency 

One of the most common concerns with GLP-1 medications is a potential deficiency in vitamin B12. These drugs slow down the digestion process, which can affect the absorption of B12, particularly in individuals with already low levels or those who have been on long-term therapy. Vitamin B12 is crucial for red blood cell production, nerve function, and DNA synthesis. 

Signs of Deficiency: Fatigue, weakness, memory problems, and tingling in the hands and feet. 

Prevention: Include B12-rich foods in your diet, such as meat, fish, dairy, and fortified cereals. If necessary, consider a B12 supplement, especially if you’ve been on GLP-1 therapy for an extended period. 

Folate (Vitamin B9) Deficiency 

Folate is essential for DNA synthesis and cell division. GLP-1 drugs can potentially impact folate absorption due to changes in the gastrointestinal system. This nutrient is particularly important for women of childbearing age, as it helps prevent neural tube defects in the developing fetus. 

Signs of Deficiency: Fatigue, irritability, and anemia. 

Prevention: Ensure adequate intake of folate through leafy greens, legumes, and fortified grains. If your dietary intake is insufficient, a folate supplement may be recommended. 

Vitamin D Deficiency 

Vitamin D plays a crucial role in bone health, immune function, and mood regulation. Weight loss, often seen with GLP-1 therapy, can lead to fluctuations in vitamin D levels. Additionally, reduced sun exposure or a diet low in vitamin D can exacerbate the deficiency. 

Signs of Deficiency: Bone pain, muscle weakness, and a higher risk of fractures. 

Prevention: Consider a vitamin D supplement, especially during the winter months or if you have limited sun exposure. Aim for a daily intake of 1000-2000 IU of vitamin D3, and include foods like fatty fish, fortified dairy, and egg yolks in your diet. 

Calcium Deficiency 

Calcium is essential for strong bones and teeth, as well as proper muscle and nerve function. With a decrease in food intake, there’s a risk of not getting enough calcium, which can lead to weakened bones over time. 

Signs of Deficiency: Muscle cramps, brittle nails, and an increased risk of osteoporosis. 

Prevention: Make sure you’re getting 1000-1200 mg of calcium daily. This can be achieved through dairy products, leafy greens, fortified plant milks, and supplements if necessary. 

Protein Deficiency 

Since GLP-1 drugs can significantly reduce appetite, it’s possible that protein intake may decrease, leading to potential muscle loss and a slower metabolism. 

Signs of Deficiency: Muscle weakness, fatigue, and a weakened immune system. 

Prevention: Focus on including high-quality protein sources in your diet, such as lean meats, fish, eggs, dairy, legumes, and nuts. If you’re struggling to meet your protein needs through food, consider a protein supplement. 

Fiber Deficiency 

Fiber is crucial for digestive health, blood sugar control, and maintaining a healthy weight. A reduced appetite might lead to lower intake of fiber-rich foods like fruits, vegetables, and whole grains. 

Signs of Deficiency: Constipation, bloating, and increased blood sugar levels. 

Prevention: Aim to include plenty of fiber-rich foods in your diet. If you’re not getting enough through food, a fiber supplement can help.