The Supplement Industry Is Worth $63 Billion. Here Is What That Money Is Actually Buying.
I drink protein shakes after workouts. Not every time, but often. I have used creatine. Not religiously, but regularly. Beyond that, I try to get what my body needs from food and water rather than a pill or powder.
Is that approach holding back my results? Honestly, I do not know with certainty. That is the kind of question I want to sit with in this post, rather than pretend I have a clean answer.
Because the supplement conversation in health and fitness tends toward absolutes. Either supplements are essential tools for optimization, or they are expensive placebos sold by an unregulated industry to people who would be better off just eating real food. The truth, as usual, lives somewhere more complicated.
The Industry Nobody Is Fully Regulating
The dietary supplement market in the United States is currently worth more than $60 billion, with as many as 100,000 products available to consumers. Approximately 75 percent of Americans take a dietary supplement. (PubMed Central)
What most of those people do not know is how those products get to the shelf.
Unlike conventional foods and drug products, most dietary supplements in the US do not require pre-market approval or notification. Manufacturers bear full responsibility for ensuring the safety of their products before marketing them. The FDA does not test supplements before they are sold. It can act against products after they reach the market if a problem is identified. But by then, millions of people may have already been taking it. (PubMed)
In 1994, there were approximately 4,000 dietary supplements marketed in the United States. Today, the FDA estimates there are more than 100,000. In 2023, the FDA received more than 2,000 adverse event reports related to dietary supplements. Due to significant underreporting, the actual annual number of adverse events is estimated at more than 50,000. (PubMed Central)
That gap between what people assume about supplement safety and how the regulatory framework actually works is worth sitting with before deciding what to put in your body.
The Ones With Actual Evidence
Not all supplements are equal, and it would be dishonest to suggest otherwise. Some have genuinely strong research behind them.
Creatine monohydrate is the clearest example. A 2024 meta-analysis of 23 randomized controlled trials involving 509 participants confirmed that creatine monohydrate combined with resistance training produces meaningful increases in upper-body strength of 4.4 kg and lower-body strength of 11.35 kg in adults under 50. The International Society of Sports Nutrition consensus, based on more than 500 studies, confirms that there is no kidney damage at recommended doses in healthy individuals. This is not a supplement with manufactured hype. The evidence base is deep and consistent. (CDC)
Protein supplementation, whether from whey, casein, or plant-based sources, is well supported as a convenient way to meet daily protein targets when whole food sources fall short. The keyword is convenient. A protein shake is not superior to chicken or eggs. It is easier to consume in a specific window. That distinction matters.
Beyond those two, the evidence landscape becomes significantly thinner. Multivitamins show limited benefit in people with adequate diets. Pre-workouts often contain stimulants with real side effect profiles and doses that vary widely between products. Fat burners are largely unsupported by meaningful clinical evidence. The marketing of most supplements far outpaces the science.
The Peptide Question
Peptides, particularly GLP-1 receptor agonists like semaglutide and tirzepatide, are the most discussed compounds in the health space right now. And the conversation tends to skip past some important nuances.
GLP-1 agonists affect body weight in multiple ways, resulting in an average loss of 5 to 15 percent, which is sustainable for at least 12 months. Adverse effects can include nausea, vomiting, diarrhea, and bloating. Most people regain weight when they stop taking the medication. (Springer)
There is still limited or uncertain evidence about the long-term effects of GLP-1 receptor agonists for weight management. (PubMed Central)
That last sentence deserves more attention than it typically gets. These are powerful compounds producing real results for people dealing with obesity and type 2 diabetes who genuinely need a medical intervention. Using them as a lifestyle shortcut for people who do not meet clinical criteria is a different conversation with a different risk profile.
The cognitive and mood benefits some people report from peptide use raise an interesting question worth sitting with: is that a direct pharmacological effect, or the downstream result of losing weight, feeling better in their bodies, and moving more? We do not fully know yet. And when we do not yet fully know, it is precisely when skepticism is warranted.
The Questions Worth Asking Before You Buy Anything
Is the evidence behind this product peer-reviewed and independent of industry funding? A study funded by the company selling the supplement is not the same as independent research.
What is the actual mechanism being claimed? Does it make biological sense, or is it speculative language designed to sound scientific?
What does my diet actually look like without this product? Supplements cannot compensate for a poor diet. If the foundation is not there, adding products on top of it is treating a symptom of the real problem.
Am I getting tested regularly? If you are taking supplements that affect hormones, blood chemistry, or organ function, regular bloodwork is not optional. Your body’s actual data is more useful than any marketing claim.
Could I get this from food instead? More often than people realize, the answer is yes.
The Honest Position
Food first. Not because supplements are inherently bad, but because whole food delivers nutrients in combinations and ratios that isolated supplements rarely replicate, alongside fiber, phytonutrients, and other compounds that interact in ways we are still understanding.
Supplement selectively and with purpose. Creatine, if you are training seriously, and the evidence aligns with your goals. Protein, if your diet is genuinely falling short. Vitamin D, if you are deficient, which bloodwork can confirm. Not because an influencer recommends it or because the label uses compelling language.
And stay informed. The supplement industry is not your ally. It is a $63 billion business with weaker regulatory oversight than almost any other category of consumable product on the market. Treating that with appropriate skepticism is not paranoia. It is the rational response to the system’s actual structure.
If you want to check any specific supplement claim against peer-reviewed research, EvidenceCheck was built for exactly that. Free at evidencecheck.io
About the Author
Marcus Clark is the founder of Evolution of Wellness LLC and holds a Master of Public Health degree. He has a background in physical therapy and personal training with a focus on chronic disease prevention. Evolution of Wellness was built on the principle that health knowledge is always evolving, and the guidance people receive should evolve with it.
Marcus Clark is the founder of Evolution of Wellness LLC and holds a Master of Public Health degree. This post is for informational purposes and does not constitute medical advice. Always consult your healthcare provider for personalized guidance.
Sources
FDA on Dietary Supplements https://www.fda.gov/food/dietary-supplements
Supplement Industry Size and Regulation (FDA, CRN, 2024) https://www.crnusa.org/resources/dietary-supplements-safe-beneficial-and-regulated
Dietary Supplement Listing Act and Adverse Events (Senator Durbin, 2024) https://www.durbin.senate.gov/newsroom/press-releases/durbin-introduces-legislation-to-improve-safety-and-ensure-transparency-of-dietary-supplements
Creatine Meta-Analysis 2024 (Nutrients) https://nutritionpro.fr/en/blogs/infos/creatine-what-science-proves-and-debunks-in-2026
Creatine Safety and Efficacy (ISSN, PMC) https://pmc.ncbi.nlm.nih.gov/articles/PMC5469049/
GLP-1 Agonists for Weight Loss (AAFP, 2024) https://www.aafp.org/pubs/afp/issues/2024/1000/editorial-glp-1-agonists-weight-loss.html
GLP-1 Long-Term Evidence Gaps (ScienceDaily, 2025) https://www.sciencedaily.com/releases/2025/11/251116105627.htm