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Is peanut butter healthy for weight loss? Health benefits and portion control

Knownwell Clinical Staff
·
Feb 12, 2025
Is peanut butter healthy for weight loss? Health benefits and portion control

Peanut butter is healthy for weight loss when you choose natural types and stick to mindful portions. Its healthy fats and protein help keep you full and satisfied.

Portion size matters most when determining if peanut butter is good for you. It's easy to overdo it when you eyeball a scoop, which may slow down your progress towards weight management over time. This guide helps you decide when peanut butter fits your weight management plan.

We’ll also look at when peanut butter might work against your goals.

Table of contents 

  • What makes some peanut butters nutritious?
  • How peanut butter helps weight loss vs. pitfalls to watch out for
  • Which peanut butter types work best for weight management?
  • How can you include peanut butter in your weight management plan?
  • Quick peanut butter recipes that support weight loss
  • Get personalized nutrition support at knownwell
  • Frequently asked questions

What makes peanut butter nutritious?

Natural peanut butter is nutritious because it offers protein and key nutrients that support weight management. However, the healthiest peanut butter varieties contain just peanuts and sometimes salt. 

These natural options deliver the most nutrition without added sugars or oils. Many peanut butter brands do use hydrogenated oils, which add saturated fats to peanut butters. 

It’s important to note that natural peanut butter contains good, unsaturated fats found naturally in foods like avocados, nuts, seeds, and olive oil. 

Unsaturated fats support brain function, heart health, and help increase satiety. Fats also help you absorb vitamins A, D, E, and K.

These healthy fats are not the same as saturated fats. Limiting saturated fats from sources like fatty meats and many processed foods is good to prevent your LDL cholesterol levels from increasing. 

A 2-tablespoon serving delivers about 190 calories and 8 grams of protein. Natural varieties offer the most benefits since they contain only peanuts and salt.

Peanut butter is good for you from a nutritional standpoint because it packs so many vital vitamins and nutrients in. You'll find these essential nutrients in quality peanut butter:

  • Magnesium for muscle function
  • Folate for cellular function
  • Biotin for metabolism
  • B vitamins for energy
  • Vitamin E for antioxidant protection

You might think that peanut butter can’t contribute to supportive weight management goals because of its high-calorie content. Think again!

Research shows that peanut butter alone doesn't cause weight gain when consumed regularly, depending on the type and portions. 

In fact, some studies found that peanut butter may even help people lose weight by increasing feelings of fullness and satiety. This means you can confidently incorporate peanut butter into your daily meals. 

Nutrition facts for 2 tablespoons of natural peanut butter

  • 190 calories
  • 7 grams of protein
  • 16 grams of fat
  • 6 grams carbohydrates (2 grams fiber)
  • Contains magnesium, folate, niacin, vitamin E, and antioxidants

How peanut butter is healthy for weight loss vs. pitfalls to watch out for

So, is peanut butter good for weight loss? Essentially, yes. Peanut butter helps with weight management by increasing fullness and providing satisfying protein. Studies show it doesn't lead to weight gain and may help some people lose weight when consumed in the appropriate portions. 

The combination of protein and healthy fats keeps you satisfied longer than other processed snacks.

However, peanut butter can pose a bit of a sticky situation when it comes to portion control. Watch your serving sizes to avoid this common pitfall and meet your weight management goals. Stick to two spoon-size servings daily if counting calories feels overwhelming.  

Benefits of peanut butter for weight management

  • High protein and fat promote lasting fullness: The protein-fat combination signals your brain that you're satisfied, reducing cravings for less nutritious snacks.
  • High fiber content supports digestion: Fiber helps you feel full while supporting healthy gut bacteria.
  • Controls blood sugar (unsweetened varieties): The protein and fat in peanut butter prevent blood sugar spikes that you may experience with other snack foods. 
  • Supplies essential nutrients: You get magnesium, vitamin E, folate, niacin, and biotin in every serving.
  • Nut consumption is associated with a lower chance of weight regain: Studies show people who eat nuts regularly tend to maintain healthier weights over time.

Potential drawbacks to consider

  • High calories in small servings: Two tablespoons pack nearly 200 calories, making it easy to overdo portions.
  • Portion control challenges: The creamy texture and satisfying taste make it tempting to eat more than intended.
  • Many brands contain added sugars and oils: Processed versions reduce the health benefits you're seeking.

Which peanut butter types work best for weight management?

The best peanut butter for health and weight management contains minimal processing and natural ingredients. 

Disclaimer: Even brands that claim they are “natural” may contain added oils and sugars. Always check the labels first.  

Look for two ingredients or fewer for maximum benefits and steer clear of peanut butters with sugar as an added ingredient. It’s best to choose peanut butter that only contains, well, peanuts

Here's how different types of peanut butter rank for weight management goals:

Natural peanut butter  or homemade peanut butter (top choice)

Serving Size: 2 tbsp

  • Calories: 200
  • Protein: 8.3 g
  • Fat: 17 g
  • Carbs: 7.2 g
  • Ingredients: Peanuts, salt

This creates the most satisfying option with maximum nutritional benefits.

Tip: Make homemade peanut butter by roasting peanuts and blending them in a food processor.

Powdered peanut butter

Serving Size: 2 tbsp

  • Calories: 50
  • Protein: 6 g
  • Fat: 1.5 g
  • Carbs: 4 g
  • Ingredients: Roasted peanuts, sugar, sea salt   
  • Note: Look for a variety of powdered peanut butter that contains no added sugar or sweeteners like PB2Pure. 

Tip: Mix powdered peanut butter into Greek yogurt for extra protein.

How to include peanut butter in your weight management plan

Peanut butter can be good for weight loss when eaten in moderation. Still, keep these tips in mind when integrating peanut butter into your daily menu to optimize its health benefits: 

  • Stick to 2-tablespoon servings or weigh portions for accuracy. Some folks find it easy to underestimate peanut butter portion sizes when eyeballing servings. 
  • Pair it with low-protein meals to balance your macronutrients throughout the day.
  • Use powdered versions in smoothies and overnight oats to add flavor without extra calories.
  • Make a peanut butter yogurt bowl with 1/2 cup of plain Greek yogurt, 1-2 Tbsp natural PB, topped with a few banana slices or berries: This combination balances fats, carbs, proteins, and helps restore glycogen.
  • Time it strategically. No "perfect" peanut butter time exists, but some people find morning consumption helps regulate blood sugar throughout the day.

Who should avoid peanut butter?

Peanut butter works well for most people's weight management goals, but it doesn't suit everyone's health needs. Here's when you might want to skip it:

People with peanut allergies

Avoid peanut butter completely if you have a peanut allergy. Severe reactions can cause anaphylaxis, creating throat swelling and potentially life-threatening symptoms.

Try almond or cashew butter instead if you have nut allergies. These other blends offer similar benefits to peanut butter. Watch for cross-contamination if companies process different nuts in the same facility.

Talk to your clinician about carrying epinephrine for allergic reactions.

People monitoring iron and zinc absorption

Peanut butter contains phytate and phosphorus, which may reduce your body’s ability to absorb minerals like iron and zinc. While it offers some iron, animal proteins remain the most reliable source. 

Talk to your healthcare provider before changing your eating pattern if you're concerned about deficiencies.

People with digestive or autoimmune conditions

People with conditions like inflammatory bowel disease (IBD), diverticulitis, or certain autoimmune disorders may need to limit peanut intake.

Peanut butter doesn’t cause inflammation for most people. It contains heart-healthy monounsaturated fats, which may actually reduce inflammation. 

However, peanut butter, specifically chunky varieties, might trigger symptoms like bloating, gas, or digestive discomfort if you have a peanut allergy, IBS, or sensitivity to lectins. Limit peanut butter if you notice specific discomfort after eating peanut butter. 

Quick peanut butter recipes that support weight loss

  • Granola bar recipe: Combine natural peanut butter, maple syrup, rolled oats, eggs, and chocolate chips. Mix all the ingredients into one bowl and place them in a baking pan. Bake the granola bars for approximately 14 to 17 minutes.
  • Chocolate peanut butter avocado pudding: Blend a ripe avocado with a big and ripe banana, 1/2 cup unsweetened cocoa powder, and 1/2 cup natural peanut butter. Sweeten with maple syrup or dates. Add some non-dairy milk if you’d like it thinner.

Get personalized nutrition support at knownwell

Our knownwell clinicians create individualized nutrition plans that include healthy foods you actually enjoy, like peanut butter. Your registered dietitian will show you how to fit your favorite foods, like healthy peanut butters, into a balanced meal plan that also helps with weight loss.

Your knownwell team takes time to understand your unique needs and preferences. We meet you where you are in your health journey. Our clinicians create a weight-inclusive, stigma-free environment where you can be yourself while taking care of your health.

We offer both in-person visits and virtual care options. You get complete, personalized support with access to physicians, dietitians, pharmacists, and nurses in select markets. 

Book a virtual visit with a knownwell clinician today. 

Our team at knownwell accepts many insurance plans. 

Book here to reserve a private virtual care visit. Our in-person clinics operate in the Boston, Chicago, Atlanta, and Dallas/Fort Worth areas.

Frequently asked questions

Does powdered peanut butter raise blood sugar?

No, powdered peanut butter doesn’t raise blood sugar significantly. It has a low glycemic index in natural varieties. Peanuts alone contain almost no sugar.

However, most powdered peanut butter brands do have added sugar. Always check the ingredients label to be sure of the sugar content of each brand. 

Is peanut butter Keto-friendly?

Natural peanut butter is keto-friendly due to its high fat and moderate protein content. Varieties with added sugars or flavorings don't work as well for keto approaches. Choose unprocessed types with minimal ingredients.

Can you eat peanut butter on GLP-1 therapy?

You can eat peanut butter while taking GLP-1 medications, but portion control becomes even more important. High-fat, high-calorie foods like peanut butter can cause digestive upset in large amounts when combined with these medications.

How much peanut butter is too much?

No specific amount of peanut butter is too much, but it depends on the person and their individual needs. Each individual has different caloric and nutritional needs. 

Most people do well with one to two servings per day. One serving (2 Tablespoons) contains about 190 calories, so factor this into your daily intake.

When is the best time to eat peanut butter for weight management?

No single best time exists to eat peanut butter for weight management, though some people find morning consumption helps regulate blood sugar.

Works Cited (Peer-Reviewed Sources)

These sources are published in academic journals or peer-reviewed scientific databases.

  1. Coelho, Soelma Costa, et al. “Acute and Second-Meal Effects of Peanuts on Glycaemic Response and Appetite in Obese Women with High Type 2 Diabetes Risk: A Randomised Crossover Clinical Trial.” British Journal of Nutrition, vol. 111, no. 4, 2014, pp. 690–697. Cambridge University Press, https://doi.org/10.1017/S0007114513003013.

  2. Guarneiri, Lauren L., and Jamie A. Cooper. “Intake of Nuts or Nut Products Does Not Lead to Weight Gain, Independent of Dietary Substitution Instructions: A Systematic Review and Meta-Analysis of Randomized Trials.” Advances in Nutrition, vol. 12, no. 2, 2021, pp. 384–401. https://pubmed.ncbi.nlm.nih.gov/32945861/.

  3. Reis, C., et al. “Peanut Consumption Improves Lipid Metabolism and Reduces Inflammation: A Randomized Trial and Meta-Analysis.” Frontiers in Nutrition, vol. 9, 2022, Article 853378. https://pmc.ncbi.nlm.nih.gov/articles/PMC7387408/.

  4. Petersen, Kristina S., et al. “The Effect of a Peanut-Enriched Weight Loss Diet Compared to a Low-Fat Weight Loss Diet on Body Weight, Blood Pressure, and Glycemic Control.” Nutrients, vol. 14, no. 14, 2022, Article 2986.

  5. Li, Zhaoping, et al. “Peanut Consumption Reduces Cardiovascular Risk in Overweight Individuals.” Journal of Nutrition, vol. 143, no. 3, 2013, pp. 337–344.

  6. Parilli‑Moser, I., et al. “Effect of Peanut Consumption on Cardiovascular Risk Factors: A 6‑Month Randomized Controlled Trial and Meta‑Analysis.” Antioxidants, vol. 2022, 2022, Article 853378. PMC free article. https://pubmed.ncbi.nlm.nih.gov/35433776/

  7. Wang, D., et al. “Replacing White Rice Bars with Peanuts as Snacks in the Habitual Diet Improves Metabolic Syndrome Risk among Chinese Adults.” The American Journal of Clinical Nutrition, 2021. https://pubmed.ncbi.nlm.nih.gov/33236043/

  8. Xia, J., et al. “Effects of Peanuts and Tree Nuts on Lipid Profile: Systematic Review and Meta‑Analysis of RCTs.” [Journal], vol. 2021, Article PMC8679310. https://www.mdpi.com/2076-3921/12/3/698

  9. Tindall, A. M., et al. “The Effect of Nuts on Markers of Glycemic Control: A Systematic Review and Meta‑Analysis of Randomized Controlled Trials.” The American Journal of Clinical Nutrition, vol. 109, 2019 https://www.mdpi.com/2076-3921/14/4/467

Works Cited (Not Peer-Reviewed Sources)

These sources include government sites, nonprofit organizations, and clinical trial registries. They are credible but not peer-reviewed.

  1. Crohn’s & Colitis Foundation. “What Should I Eat?” Crohn’s & Colitis Foundation, https://www.crohnscolitisfoundation.org/patientsandcaregivers/diet-and-nutrition/what-should-i-eat.

  2. USDA FoodData Central. “Peanut Butter, Smooth Style, with Salt.” U.S. Department of Agriculture, https://fdc.nal.usda.gov/food-details/170379/nutrients.

  3. ClinicalTrials.gov. “Peanut Consumption and Weight Loss.” National Library of Medicine, Study ID: NCT02654535, https://clinicaltrials.gov/study/NCT02654535.

  4. National Center for Biotechnology Information. “Dietary Fats and Cardiovascular Health.” National Institutes of Health, https://www.ncbi.nlm.nih.gov/books/NBK570127/.

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