How to Find the Best Protein Powder for Hormonal Imbalance

📌 Overview and Key Takeaways

This is a Certified Nutrition Coach’s guide on how to find the best protein powder for hormonal imbalance.

Discover how to meet your protein needs without disrupting your hormones.

Last Updated
Jul 21, 2026

Author and Medical Reviewer

Written by Jack, CNC

Jack is a National Academy of Sports Medicine Certified Nutrition Coach.

Disclaimer: This article is for general informational purposes only and is not a substitute for personalized medical advice. Consult a licensed healthcare professional before making changes to your diet.

Protein Powder for Hormonal Imbalance

Can Protein Powder Cause Hormonal Imbalance?

Dietary protein intake has been shown to affect hormone levels in both men and women.

In men, higher protein intake is associated with lower concentrations of sex hormone-binding globulin (SHBG), which can increase the bioavailability of testosterone and estrogen (J Clin Endocrinol Metab, 2000).

In premenopausal women, lower intake of plant protein is associated with lower progesterone, higher follicle-stimulating hormone (FSH), and an increased risk of anovulation (J Clin Endocrinol Metab, 2021).

In postmenopausal women, higher red meat consumption is associated with lower SHBG, and higher dairy intake is associated with increased estrogen concentrations (Eur J Clin Nutr, 2010).

Protein itself is unlikely to cause hormonal imbalance, however.

In other words, although it does affect hormone levels, it will not cause an imbalance if consumed in moderation as part of a balanced diet.

That said, many protein powders contain added ingredients that could contribute to hormonal imbalance.

What Is the Best Protein Powder for Hormonal Imbalance?

The type or amount of protein in your protein powder is not a concern when it comes to hormonal imbalance.

But many protein powders contain added emulsifiers, thickeners, sweeteners, and other artificial and/or ultra-processed additives that might be.

🚫 Avoid Food Additives

Many of the food additives found in protein powder have been shown to alter the composition of your gut microbiome (North Clin Istanb, 2019).

And this collection of microbes plays a critical role in the regulation of multiple endocrine pathways, including the metabolism of estrogens, androgens, and other hormones.

In fact, gut dysbiosis has been mechanistically linked to altered hormone levels and endocrine disorders, most notably polycystic ovary syndrome (PCOS) (Mol Nutr Food Res, 2024).

It follows that, over time, the regular consumption of food additives might cause hormonal imbalance.

⚠️ Here is a list of the most common food additives in protein shakes and powders:

• acacia fiber
• acacia gum
• acesulfame potassium
• artificial flavors
• ascorbic acid
• aspartame
• calcium carbonate
• carrageenan
• cellulose gum
• dextrin
• dicalcium phosphate
• dipotassium phosphate
• erythritol
• gellan gum
• guar gum
• gum arabic
• inulin
• locust bean gum
• maltitol
• maltodextrin
• mono- and diglycerides
• ‘natural’ flavors
• rice bran extract
• rice dextrin
• rice hulls
• rosemary extract
• silica
• silicon dioxide
• sodium alginate
• soluble corn fiber
• sorbitol
• soy lecithin
• sucralose
• sunflower lecithin
• tocopherols
• tricalcium phosphate
• xanthan gum
• xylitol
• zinc oxide

As a rule of thumb, if you cannot find it in nature or make it at home, it is probably a food additive.

🚫 Avoid Protein Concentrates and Isolates

You might also want to avoid ultra-processed protein concentrates and isolates.

Most protein shakes and powders are made from one or both of these ultra-processed protein sources, which have been mechanically and/or chemically stripped of everything but the protein.

This includes the enzymes, fiber, and other natural digestive aids that help your gut break them down.

You therefore do not digest them in the same way that you do whole foods, which could affect your gut health.

Studies show that regularly eating protein concentrates and isolates might disrupt your gut microbiome and cause the formation of toxic byproducts in your gut (Nutrients, 2018; Mol Nutr Food Res, 2024).

You should thus look for protein shakes and powders made from whole food protein sources like egg whites and almonds, which are easier to digest and absorb.

Order Samples to see for yourself.

Sources

1. The Journal of Clinical Endocrinology and Metabolism (J Clin Endocrinol Metab). Diet and sex hormone-binding globulin. 2000.
2. The Journal of Clinical Endocrinology and Metabolism (J Clin Endocrinol Metab). Low Intake of Vegetable Protein is Associated With Altered Ovulatory Function Among Healthy Women of Reproductive Age. 2021.
3. European Journal of Clinical Nutrition (Eur J Clin Nutr). Consumption of animal products, their nutrient components and postmenopausal circulating steroid hormone concentrations. 2010.
4. Northern Clinics of Istanbul (North Clin Istanb). Food additives and microbiota. 2019.
5. Molecular Nutrition & Food Research (Mol Nutr Food Res). From Gut to Hormones: Unraveling the Role of Gut Microbiota in (Phyto)Estrogen Modulation in Health and Disease. 2024.
6. Nutrients (Nutrients). Effect of a Protein Supplement on the Gut Microbiota of Endurance Athletes: A Randomized, Controlled, Double-Blind Pilot Study. 2018.
7. Molecular Nutrition & Food Research (Mol Nutr Food Res). In Vitro Fermentation of Animal and Plant Protein Isolates by the Human Gut Microbiota Under High and Low Carbohydrate Conditions. 2024.

Editorial Guidelines

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This article was written by a Certified Nutrition Coach and reviewed by a Registered Dietitian. We rely on peer-reviewed research and trusted medical sources, and regularly update our content to ensure accuracy and clarity.