Supplements Worth Taking vs Marketing Hype

The supplements worth taking are usually the ones that correct a measured deficiency or have consistent human evidence for a specific goal, such as vitamin D when levels are low, vitamin B12 for people at risk of deficiency, and creatine monohydrate for strength training. Most of what is marketed as "anti-aging," "detox" or "hormone boosting" lacks good human data. The smartest approach is lab-guided, specific, and short on products.

Supplements are a large industry, and dietary supplements are not reviewed by FDA for effectiveness before they are sold. That puts the burden on you, and ideally your physician, to decide what earns a place in your routine.

How I decide which supplements are worth taking

In my practice, I ask four questions about any supplement:

1. Is there a reason? A measured deficiency, a specific risk, or a defined goal.
2. Is there human evidence? Ideally randomized trials showing benefit for an outcome that matters, not just a lab value.
3. Is it safe for you? Considering your medications, kidney and liver function, and conditions.
4. Is the product trustworthy? Third-party tested, with transparent doses.

If a product fails the first two questions, it usually does not make the list. My broader thinking on this is in biohacking vs evidence-based optimization.

Supplements worth taking, in the right person

Vitamin D, when levels are low

Correcting deficiency matters for bone health and is reasonable for people with low levels. Large trials giving vitamin D to people who were not deficient have generally been disappointing for preventing heart disease or cancer. Test, then treat. More detail in vitamin D: science vs hype.

Vitamin B12, for those at risk

Older adults, people following vegan diets, and people taking metformin or long-term acid-suppressing medications are at higher risk of B12 deficiency, which can cause anemia, neuropathy and cognitive symptoms. Testing guides the decision.

Creatine monohydrate

Creatine has one of the strongest evidence bases among sports supplements for improving strength and lean mass when combined with resistance training, including in older adults. It is inexpensive and generally well tolerated. It can raise blood creatinine slightly, which can be mistaken for a kidney problem on lab tests, so tell your physician you take it. Research on cognitive effects is early.

Omega-3 fatty acids

Eating fatty fish is a reasonable dietary pattern. Over-the-counter fish oil trials for preventing cardiovascular events have been mixed. Prescription omega-3 products studied in specific high-risk patients are a different situation from store-bought capsules. Higher doses have been associated with a higher risk of atrial fibrillation in some trials, so this is a conversation, not a default.

Fiber and protein, as food support

Psyllium fiber can improve LDL cholesterol and bowel regularity. Protein powder is simply convenient food, useful when you struggle to meet protein needs for muscle preservation.

Iron, folate and others: only when indicated

Iron should be taken only for documented deficiency, because excess iron causes harm. Folate is important before and during pregnancy. Magnesium may help people with low dietary intake.

Where marketing outruns the evidence

Multivitamins for disease prevention

The US Preventive Services Task Force has concluded the evidence is insufficient to recommend multivitamins for preventing cardiovascular disease or cancer in the general population, and it recommends against beta-carotene and vitamin E supplements for that purpose.

"Testosterone boosters"

Most over-the-counter testosterone boosters lack good evidence of meaningfully raising testosterone. Some products in the bodybuilding category have been found to contain undeclared drugs or steroid-like substances.

"Detox" and "cleanse" products

Your liver and kidneys handle detoxification. There is no good evidence that commercial detox products improve it, and some contain laxatives or herbs with liver toxicity.

High-dose antioxidants

More is not better. Some research suggests that high-dose antioxidant supplements may blunt certain training adaptations, and certain antioxidants have caused harm in specific populations.

NAD+ precursors

NMN and NR are biologically interesting, and FDA has allowed NMN to be sold as a dietary supplement since 2025. Human data on meaningful health outcomes are still small and early. See the NMN entry in our peptide library.

Safety: interactions and lab interference

Supplements are not automatically safe because they are "natural":

• St. John's wort interacts with many medications, including some antidepressants, anticoagulants and oral contraceptives.
• High-dose biotin, common in hair and nail products, can interfere with several lab tests, including some thyroid and cardiac tests. Stop it for a few days before blood work if your physician advises.
• Turmeric, ginkgo and fish oil can increase bleeding risk alongside anticoagulants.
• Green tea extract in concentrated form has been linked to liver injury.

Choosing a quality product

• Look for USP Verified or NSF Certified seals.
• Avoid proprietary blends that hide doses.
• Be skeptical of claims to cure, treat or reverse disease.
• Prefer single-ingredient products so you know what is doing what.

The lab-first approach

At Laeeq M.D., supplement recommendations follow testing and a full medication review, consistent with the lab-first approach to personalized medicine. Many patients leave with fewer products than they came in with, and a clearer reason for each one that remains.

Book a Consultation

If you are unsure which supplements are worth taking for you, book a consultation with Dr. Laeeq. The 60-minute evaluation, virtual or in person in Reston, VA, includes a review of everything you take and a lab plan to guide decisions.

This article is for educational purposes and is not medical advice. Discuss any treatment with a licensed physician who knows your history.