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Why Do You Keep Craving Protein? Learn What It’s Telling You

By Michael Lam, MD, MPH, Carrie Lam, MD, Jeremy Lam, MD

Evidence-Based Reviewed Article

In This Article

An image of a woman craving proteinCraving protein is not a random urge; it may be your body’s way of telling you it needs something important. You may have been more active, skipped a balanced meal, or your energy has been dropping during the day. These cravings are worth paying attention to because they can give you indications about what your body needs right now.

In this article, we will explore the most common reasons why you might be craving protein. We will share simple and practical ways to give your body the nourishment it’s asking for so you can make manageable changes that help you feel full, steady, and energized.

What Craving Protein Usually Means

If you keep asking yourself, “Why am I craving protein?”, your body may be giving you a helpful signal. Cravings are your body’s way of asking for something. The good news is that most causes can be effectively addressed.

Here’s a quick list of why you might be craving protein:

  • You may not be eating enough protein.
  • Your body may have more physical or recovery demands.
  • You may have unstable blood sugar.
  • Your body may be sending hormonal signals that can drive up appetite.

4 Common Reasons You’re Craving Protein

Let’s look at these reasons more in-depth and what you can do to address them:

1. You might not be eating enough protein.

If you are not eating enough protein, you may become hungry soon after meals. Many adults get only about the baseline protein intake of 0.8 grams per kilogram of body weight, regardless of their age [1]. While this covers essential needs, it might not be enough to leave everyone feeling satisfied [2].

What you can try:

  • Include a palm-sized protein at each meal. A serving size about the size of your palm, roughly 3–4 ounces, can help you estimate portions. You can choose healthy options like chicken breast, fish fillets high in omega-3s, plant-based foods like tofu, or lean cuts of beef.
  • Don’t skip breakfast. A good breakfast can set the tone for your entire day. To help reduce cravings and keep you feeling full, start your day with a high-protein breakfast [3]. Good options include Greek yogurt with fruit, eggs with vegetables, a tofu scramble, or a quick protein smoothie.
  • Create meals that include protein, fiber-rich carbohydrates, and healthy fats. When you build your meals with these, you’re giving your body a steady, balanced fuel source that keeps energy up and cravings down.

2. Your body’s needs may be higher.

Sometimes your body will let you know it needs more protein by making you crave it, especially after a workout, during a busy day, or while you’re recovering from an illness or injury.

What you can try:

  • Eat a snack that is high in protein, like Greek yogurt, edamame, or eggs, after working out. Research suggests that eating up to 20-40 grams of high-quality protein (approximately 0.25 grams per kilogram of body weight) within a few hours of exercise can help speed up muscle protein synthesis and recovery [4].
  • Make sure the meal after any strenuous exercise includes an adequate protein source. For active individuals, aim for 1.4 to 2.0 grams of protein per kilogram of body weight per day, spread across meals and snacks [4]. This may help restore your muscles and support the body’s overall recovery.

3. Your blood sugar might be out of balance.

If you lose energy easily, get angry when you’re hungry, or if you quickly reach for something sweet or starchy, your blood sugar may be going up and down more than it should.

What you can try:

  • An image of a balanced mealEat enough protein along with your carbohydrates to help keep your blood sugar stable. In one study, people with type 2 diabetes had smaller spikes in blood sugar after eating a breakfast rich in protein, rather than one high in carbs [5]. This helped them keep their blood sugar levels steady until their next meal. Another study showed that healthy adults also improved their blood sugar control by adding protein to their meals [6].
  • Eat regular meals. Skipping meals often makes you feel hungrier later in the day.
  • Make sure each meal has both protein and fiber. This combo helps you feel more satisfied longer and keeps your energy more stable.

4. Hormonal changes could affect your appetite.

Sometimes cravings are not just about hunger. They can shift depending on your stress levels, how well you’ve slept, or where you are in your menstrual cycle. This is because appetite-regulating hormones like GLP-1 and PYY, along with the gut–brain connection, influence what you feel like eating [7]. If your body is expecting protein, these signals can make you want it even more.

What you can try:

  • Keep a steady eating rhythm with three balanced meals and one or two snacks each day.
  • Make sleep and stress reduction part of your routine. Both can influence how your hunger signals work.
  • Pay attention to your patterns. You may crave more protein when you’re stressed out or after having a poor night’s sleep.

Protein Cravings and Chronic Stress

If you are living with Adrenal Fatigue, a condition where the body is unable to keep up with long-term stress, these hormonal signals can be stronger and harder to ignore. To understand why, it helps to know what Adrenal Fatigue is and how your body reacts to stress.

When stress continues for too long, your adrenal glands are asked to keep making cortisol without much of a break. Over time, this constant demand can wear them down, leading to lower cortisol levels. This is what happens in Adrenal Fatigue. Low cortisol can leave you feeling tired, more easily overwhelmed, run down, and even dealing with digestive or metabolic issues.

In the more advanced stages of Adrenal Fatigue, your body can struggle to process carbohydrates properly. This often causes unstable blood sugar and stronger cravings for protein and fat, since these foods give you a slower and steadier source of energy. You might notice that you feel tired or irritable just two or three hours after a carb-heavy meal.

Including a good source of protein and healthy fats at every meal can help your body release sugar more gradually, avoid sudden crashes, and keep your energy steady between meals.

Signs You Might Need More Protein

Most healthy adults should start with about 0.8 grams of protein per kilogram of body weight per day. For example, someone who weighs 70 kilograms (154 pounds) should get about 56 grams of protein. It usually works better to spread that amount out throughout breakfast, lunch, and dinner than to put it all in one meal.

Here are a few signs that might mean it’s time to check in on your protein intake:

  • An image of a man feeling tired and weakYou feel tired or weak more often. Not getting enough protein may negatively impact your muscles and energy, making everyday chores feel harder.
  • Your hair, skin, or nails have changed. When your body doesn’t make enough collagen, keratin, and other essential proteins, your hair may get thinner, your nails may break more easily, and your skin may be drier than usual.
  • You recover more slowly. Cuts, scrapes, or soreness from working out may last longer if your body doesn’t have enough protein to repair tissues.
  • You are losing muscle. If you don’t consume enough protein, your body could tear down muscle to acquire the amino acids it needs.
  • You keep craving foods that are high in protein. That craving for chicken, eggs, fish, or beans could be your body’s way of asking for “more.”

How to Meet Your Protein Needs

Now that you understand why you might be craving protein, let’s talk about how to actually get enough of it each day.

1. Know your daily goal.

  • Most healthy adults do well with about 0.8 to 1.2 grams of protein per kilogram of body weight.
  • If you weigh 60 kg (132 lbs), that’s roughly 48 to 72 grams a day.
  • If you are active, recovering from an illness, or older, you may need more. A health professional can help you set the right target for you.

2. Spread it throughout the day.

  • Your body uses protein best when you have some at every meal instead of loading it all at once.
  • Try aiming for about 25 to 35 grams at breakfast, lunch, and dinner. This can help you stay full and keep your energy steady.

3. Build balanced plates.

Protein has the best effect when paired with fiber and healthy fats. This slows digestion, keeps blood sugar stable, and makes your meals more satisfying.

Meal ideas to try:

  • Eggs with spinach, whole-grain toast, and avocado
  • Salmon with quinoa, roasted vegetables, and olive oil
  • Tofu stir-fry with brown rice and sesame seeds

4. Get a variety of protein sources.

Variety is not only interesting for your meals but also helps you get an array of nutrients.

  • Animal-based: chicken breast, turkey, fish like salmon or sardines, eggs, Greek yogurt, cottage cheese
  • Plant-based: lentils, chickpeas, black beans, tofu, tempeh, edamame, nuts, seeds
  • Combining different plant proteins over the course of the day can give you all the amino acids your body needs. In general, aim to pair legumes and nuts with whole grains.

5. Use simple portion guides.

You do not need to weigh your food. These simple guides can help.

  • Palm-sized portion of cooked meat or fish = about 25 to 30 g protein
  • 2 eggs = about 12 g
  • ¾ cup Greek yogurt = about 15 to 20 g
  • 1 cup cooked lentils or beans = about 15 to 18 g

6. Make it work on busy days.

  • Start your morning with a protein-rich breakfast.
  • Keep quick options like nuts, cheese sticks, or hummus with veggies on hand.
  • Prepare a batch of protein, such as grilled chicken, baked tofu, or cooked beans, to use in different meals during the week.

When to See a Healthcare Professional

Most of the time, craving protein isn’t anything to worry about. But if certain signs keep showing up, it may be a good idea to consult with a healthcare professional.

Pay attention to these signs:

  • An image of a woman who is tired and sleepyFeeling tired or weak all the time, even after a good night’s sleep.
  • Possible nutrient deficiencies include experiencing frequent colds, cuts that take a long time to heal, hair thinning, or nails that break easily.
  • Having unstable blood sugar levels, such as feeling shaky, sweating, or more irritable than usual after eating.
  • Weight changes that happen fast and for no clear reason, especially if they occur without changing your food or lifestyle.
  • Heavy menstrual cycles. If you are anemic, you might be craving more meat as it’s higher in iron. Make sure to get your hemoglobin checked.

These signs may indicate that you may have low iron, thyroid problems, hormonal imbalance, or blood sugar issues. A healthcare professional can perform simple blood tests, review your diet, and help you assess what your body needs.

A helpful tip: Before your appointment, try to keep track of what you eat, when you’re craving food, and how you’re feeling for at least three days. By tracking your food intake and experiences, you can provide your doctor with important information that helps improve their recommendations.

In Closing

Listening to your body’s signals can make a huge difference in how you feel every day. When you understand why you are craving protein, you can make smart decisions on which foods support your energy, mood, and health. A few small changes, such as adding protein to every meal and keeping balanced snacks on hand, can go a long way in helping you feel steady and satisfied. And if you are still a bit off, it is much better to reach out to an expert healthcare professional, like our team at Lam Clinic, to get an extra layer of support. You deserve to feel your best.

References

  1. World Health Organization (WHO). Dietary Reference Intakes for Energy, Carbohydrate, Fibre, Fat, Fatty Acids, Cholesterol, Protein and Amino Acids (Macronutrients). Geneva (CH): WHO; 2007. (WHO Technical Report Series 935). Available from:
    https://iris.who.int/items/78c03092-bcc2-40f5-90d1-60641ecdf6ea
  2. Bauer J, Biolo G, Cederholm T, Cesari M, Cruz-Jentoft AJ, Morley JE, et al. Evidence-based recommendations for optimal dietary protein intake in older people: a position paper from the PROT-AGE Study Group. J Am Med Dir Assoc. 2013 Aug;14(8):542–59. doi: 10.1016/j.jamda.2013.05.021. Available from:
    https://www.jamda.com/article/S1525-8610(13)00326-5/fulltext
  3. Hoertel HA, Will MJ, Leidy HJ. A randomized crossover, pilot study examining the effects of a normal protein vs. high protein breakfast on food cravings and reward signals in overweight/obese “breakfast skipping”, late-adolescent girls. Nutr J. 2014 Aug 6;13:80. doi: 10.1186/1475-2891-13-80. PMID: 25098557; PMCID: PMC4249715. Available from:
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4249715/
  4. Jäger R, Kerksick CM, Campbell BI, Cribb PJ, Wells SD, Skwiat TM, et al. International Society of Sports Nutrition Position Stand: protein and exercise. J Int Soc Sports Nutr. 2017;14:20. doi: 10.1186/s12970-017-0177-8. Available from:
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469049/
  5. Park YM, Heden TD, Liu Y, Nyhoff LM, Thyfault JP, Leidy HJ, et al. A high-protein breakfast induces greater insulin and glucose-dependent insulinotropic peptide responses to a subsequent lunch meal in individuals with type 2 diabetes. J Nutr. 2015 Mar;145(3):452–8. doi: 10.3945/jn.114.202549. PMID: 25733459; PMCID: PMC6619673. Available from:
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6619673/
  6. Basturk B, Koc Ozerson Z, Yuksel A. Evaluation of the effect of macronutrients combination on blood sugar levels in healthy individuals. Iran J Public Health. 2021 Feb;50(2):280–7. doi: 10.18502/ijph.v50i2.5340. PMID: 33747991; PMCID: PMC7956086. Available from:
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7956086/
  7. Barakat GM, Ramadan W, Assi G, Maroun R, Daher C, Ayoub F, et al. Satiety: a gut–brain relationship. J Physiol Sci. 2024;74:11. doi: 10.1186/s12576-024-00904-9. Available from:
    https://pubmed.ncbi.nlm.nih.gov/38317587/

Dr. Lam’s Key Questions

If you are asking why am I craving protein so often, your body may need steadier fuel. Common reasons include not eating enough protein, unbalanced blood sugar, or shifting hormones. Aim for 25 to 35 grams at meals, pair with fiber and healthy fats, and avoid skipping breakfast.

After exercise, your body works hard to repair and build muscle. This is why many people notice protein cravings soon after a workout. Having a protein-rich snack or meal within a few hours supports recovery and helps you feel more energized and less hungry later.

Stress can affect hormones that control appetite, making cravings stronger. When cortisol is imbalanced, your body may lean on protein and fat for steadier energy. If this happens often, focus on balanced meals, good sleep, and stress-reducing habits to calm cravings and support your body’s needs.

© Copyright 2016-2025 Michael Lam, M.D. All Rights Reserved.