Nutrition & Supplements

Supplements Worth Taking
vs. Hype: A Dietitian's Guide

The supplement industry is a multi-billion dollar space full of big promises and fine print. Our Registered Dietitian Camille breaks down exactly what's worth your money — and what isn't.

The supplement industry is loud. Protein powders, greens powders, collagen, creatine, probiotics, adaptogens, and countless other products are marketed as the missing link for better energy, better health, and better performance. Some of those products can be useful. Many are not as impressive as the marketing suggests.

The bigger point is this: supplements should support your health foundation, not replace it. Before worrying about what powder or capsule to buy, the priority should still be quality nutrition, regular physical activity, sleep, and stress management. Supplements can help fill gaps, but they should not be the first move.

Watch the entire conversation with our Registered Dietitian, Camille, to get all the answers and practical next steps on which supplements are worth taking — and which ones are more marketing than medicine.

Health & Care Podcast with Camille, RD

Supplements: What's Worth It and What's Not

Build the Foundation First

If we were building a health pyramid, supplements would be near the bottom. They are the extra push, not the base. For most people, the base still comes down to four key pillars — and those should be locked in before reaching for a supplement bottle.

Your Foundation Checklist

Check off what you have in place. Supplements work best when these are solid.

🍽 Balanced Nutrition
Adequate calories, varied whole foods, consistent meals
🏃 Regular Physical Activity
Consistent movement, both strength and cardiovascular
😴 Quality Sleep
7–9 hours consistently; this is when your body repairs
🧠 Stress Management
Active strategies to manage chronic stress and recovery
Check each pillar you have consistently in place.
Important: Before starting any supplement, consult with a Registered Dietitian or your primary care physician. Some supplements can interact with medications or cause issues for people with certain health conditions — including kidney disease, heart conditions, diabetes, and hormone-related concerns.

Why Supplement Decisions Should Be Individualized

The right supplement depends on the person, their diet, their labs, their goals, their medications, and their medical history. Some supplements can interact with medications or create problems for people with certain health conditions. Camille refers to these as med-nutrient interactions — and they're more common than most people realize.

Supplements may be easy to buy over the counter, but that does not mean they are automatically safe or useful for everyone. Here are some situations where you should absolutely consult a professional first:

The kidneys filter waste from your blood. If they're not functioning fully, certain supplements — especially potassium and some protein powders — can accumulate to dangerous levels. What seems like a healthy supplement could place serious strain on an already compromised kidney.
Several supplements affect heart rhythm, blood pressure, and circulation. Omega-3s, magnesium, and CoQ10 can all interact with cardiac medications. Never add supplements to a cardiac treatment plan without coordinating with your cardiologist or RD.
Some supplements can affect insulin sensitivity or blood glucose levels, which may amplify or interfere with medications like metformin. Certain adaptogens marketed for blood sugar support may not be safe alongside prescription diabetes management.
Many supplements targeting hormones, libido, or menopause symptoms are not well-regulated or evidence-based. Some can actually disrupt hormones further rather than support them. This is especially important for women in perimenopause or postmenopause, where hormonal balance is already in flux.
GLP-1 medications slow digestion significantly, which means getting adequate protein becomes even harder. People on these medications often struggle to hit protein targets through food alone, making a high-quality protein supplement more important — but the right type and timing matters more than ever.

Top Supplements Worth Taking

These are the supplements Camille recommends most consistently — each one backed by strong research and a clear rationale for when it makes sense to use them.

Vitamin D

Evidence Strength: Very Strong

One of the most commonly deficient nutrients, especially in Michigan winters. Supports bone health, immune function, muscle function, mood, and inflammation reduction. Dosage should be guided by blood work.

🏵

Omega-3s

Evidence Strength: Strong

Critical for heart health, brain health, and inflammation support. Many people — especially those who don't eat much seafood — fall short on omega-3 intake. Dosage depends on diet and cardiovascular risk profile.

💪

Protein

Evidence Strength: Very Strong

The supplement Camille discusses most often. Most people think they're hitting protein targets but fall short. Especially useful post-workout, during busy days, and for those on GLP-1 medications. Aim for 15–30g per meal.

🌿

Fiber

Evidence Strength: Strong

One of the most overlooked nutritional gaps. Targets: ~25g/day for women, ~30g/day for men. Supports gut health, heart health, and GI cancer prevention. A supplement can help when food sources consistently fall short.

Not All Protein Supplements Are Equal

With so many protein options on the market, here's how the three most common types stack up — especially when the goal is supporting muscle recovery and lean mass:

1
🍨
Whey Protein
Top Pick
Highest in leucine, the key amino acid that triggers muscle protein synthesis. Fast-absorbing and the most researched protein source for recovery and lean mass.
2
🌿
Pea Protein
Great Alternative
The strongest plant-based option. Hypoallergenic, good amino acid profile, and solid evidence for muscle support. Best choice for those avoiding dairy or animal products.
3
🧙
Collagen
Limited for Muscle
Lacks the complete amino acid profile needed for muscle protein synthesis. May offer some benefit for joints and skin — but it is not the right choice if muscle recovery and strength are your goals.

What About Probiotics?

Probiotics are worth discussing separately. They can be genuinely helpful — particularly for people with IBS, digestive disorders, or those recovering from antibiotic use. As gut microbiome research continues to grow, probiotics are moving from "reactive" products to daily preventive support for many people.

Key nuance: "Probiotic" is an umbrella term for many bacterial strains that work differently. The right strain depends on the individual and the condition. A Registered Dietitian can help identify which specific strain makes sense for you — rather than guessing with a generic product.

The Case for Creatine

Creatine deserves its own section because it is one of the most researched supplements available — yet it is still widely misunderstood. For years it was associated almost exclusively with football players and bodybuilders. Now it's being discussed far more broadly, including in women's health, healthy aging, and everyday performance.

💪

Strength & Performance

Evidence Strength: Very Strong

Supports muscle protein synthesis, strength gains, power output, and recovery. Well-established across decades of research for both athletes and active adults.

😴

Sleep Quality (Emerging)

Evidence Strength: Promising

Emerging research suggests creatine may improve sleep quality, particularly in women. This benefit is separate from its physical performance effects and is a newer area of active study.

🌞

Peri & Postmenopause Support

Evidence Strength: Promising

Evidence is growing around creatine's role in supporting hormone-related changes during perimenopause and postmenopause, particularly for muscle retention and energy.

🧠

Cognitive Function

Evidence Strength: Emerging

Some research points to potential brain health and cognitive benefits, especially under conditions of sleep deprivation or mental fatigue. More research is ongoing.

Myth busted: Creatine does not damage healthy kidneys. This fear has circulated for years but does not reflect how creatine is actually used or what the research shows. The confusion likely stems from the word "creatinine" — a waste byproduct the kidneys filter — being misassociated with the supplement creatine. The standard recommendation is 5 grams per day. Food sources include meat and fish.

More Hype Than Help

These are the products that get the most marketing attention — but where the evidence doesn't yet match the price tag. That doesn't mean they're completely useless, but they shouldn't be at the top of your list.

🌿

Greens Powders

Evidence Strength: Weak

You'll get some micronutrients, but not the fiber, phytonutrients, satiety, or food complexity that whole vegetables provide. Heavily marketed as a vegetable replacement — they are not. A multivitamin typically offers more complete coverage at a lower cost.

🧙

Collagen Supplements

Evidence Strength: Limited

Heavily marketed for skin, hair, nails, and joint health. Some studies show modest benefits, but the evidence is not strong enough to justify most of the claims. Changes are small, take 8–12 weeks to appear, and the cost often doesn't match the outcome.

🌿

Ashwagandha & Adaptogens

Evidence Strength: Mixed

Marketed heavily for stress, hormone balance, and libido. There is some promising evidence — particularly for ashwagandha — but not enough for Camille to make a strong recommendation. More research is needed before this earns a top-tier spot.

🧪

Trend Blends & Proprietary Stacks

Evidence Strength: Very Weak

Many trendy blends are built on branding, not research. Some are not adequately tested, meaning you may not even know what you're getting. If you can't identify each ingredient and the dosage clearly, skip it.

On the horizon: Electrolyte supplements are a topic members are asking about frequently. While not covered here in depth, they can be genuinely useful for active individuals — especially around workouts and in warmer months. Ask Camille during your next session for personalized guidance.

Why Third-Party Testing Matters

The supplement industry is largely unregulated compared to pharmaceuticals. Supplements don't need to prove they work before hitting shelves — they only need to avoid being overtly dangerous. This creates a real problem: some products may not contain what the label says, or may contain fillers and undisclosed ingredients.

Third-party testing is the solution. Independent organizations test products for purity, accuracy, and safety — verifying that what's on the label is actually in the bottle, in the right amounts, without contamination.

Look for certifications from organizations like NSF International or USP when selecting supplements. These are among the most recognized and rigorous in the industry.

Camille's Top Brand Recommendation: Thorne

Thorne stands out for its research standards, clinical advisory board, and rigorous quality control. They go well beyond basic third-party testing — their commitment to evidence-based formulations means what you're buying is backed by real science. It is Camille's top recommendation for members who want to know their supplements are worth taking.

The bottom line on supplements worth taking vs. hype: Don't let marketing make your decisions for you. The best place to start isn't the trendiest product — it's a clear look at what your diet, labs, and lifestyle actually need. That's where an RD makes all the difference.

Want to Know What Your Body Actually Needs?

Camille works with AFS members to sort through the supplement noise and make decisions based on their goals, health history, labs, and lifestyle — no guesswork.

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Kemper Sosa
About the Author
Director of Business Development & Marketing, Applied Fitness Solutions

On top of overseeing all business development and marketing at AFS, Kemper is supremely passionate about people. He brings his love for our members, his deep appreciation for our team, and his unending passion for life to every interaction — truly dedicated to cultivating a positive and supportive environment. On any given day you can find Kemper touring new members through the classes, behind the camera on our social pages, and representing AFS out in the community.

Kemper has served in this role since 2020 and has been with AFS since 2014. He graduated from Eastern Michigan University with a B.S. in Exercise Science and a Minor in Human Nutrition. He holds the American College of Sports Medicine Certified Personal Trainer and Exercise Physiologist credentials, as well as the NSCA Certified Strength and Conditioning Specialist certification. His proudest accomplishment to date? Becoming a father to his beautiful daughter Gracie in late 2022.

This article is for informational purposes only and does not constitute medical or nutritional advice. Consult your healthcare provider or a Registered Dietitian before starting any supplement regimen or making changes to your current medications.
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