Our Review and Citation Process

Everything on Male Optimal is researched and cited. This page explains how we do that work.

Primary Sources: The Foundation

We prioritise primary research — original studies and data, not summaries of summaries.

Our hierarchy of sources:

1. Peer-reviewed clinical trials. Randomised controlled trials in human populations published in established journals.
2. Published research in legitimate journals. Observational studies, mechanistic research, systematic reviews, meta-analyses.
3. Regulatory body publications. MHRA, NICE, WHO guidelines, FDA documents — official sources with accountability.
4. Expert sources with transparency. Clinicians publishing their experience and reasoning, with clear acknowledgment of expertise level.
5. Secondary sources, clearly labeled. Summaries and interpretations of primary research, always traced back to the original.

What we avoid:

• Marketing content masquerading as research
• Supplement company studies designed to promote their product
• "Bro-science" forums and unsourced claims
• Social media influencers without cited evidence
• Vague references to "studies show"
• Anecdotal evidence presented as proof

Evidence Grading

Not all research is equal. We rate the quality of evidence explicitly.

Study Design Hierarchy

Highest quality: Randomised Controlled Trials (RCTs)

• Gold standard for establishing causation
• Participants randomly assigned to treatment or control
• Double-blind (ideal) means neither participant nor researcher knows who gets what
• Example: "100 men randomly assigned to testosterone replacement or placebo, measured over 12 weeks"

High quality: Systematic Reviews and Meta-Analyses

• Combine results from multiple RCTs
• Reduce the impact of individual study limitations
• Show us what the body of evidence actually supports

Moderate quality: Well-Designed Observational Studies

• Follow large populations over time
• Show association, but can't prove causation (confounding variables matter)
• Valuable for rare outcomes or long-term effects
• Example: "10,000 men tracked over 10 years, correlating testosterone levels with cardiovascular outcomes"

Lower quality: Laboratory and Animal Studies

• Useful for understanding mechanism
• Don't directly tell us what works in humans
• Good for generating hypotheses
• Example: "This compound increases protein synthesis in rat muscle tissue"

Lowest quality: Case Reports and Expert Opinion

• One person's experience, or someone's educated guess
• Can be useful for identifying rare effects
• Alone, they don't establish efficacy
• Always need corroboration

How We Label Evidence

When we make a claim, we indicate the evidence quality:

• "RCTs show that..." — Strong evidence
• "Observational research suggests..." — Moderate evidence, correlation not causation
• "Mechanistic studies indicate..." — Plausible based on how it works, not yet proven in humans
• "Anecdotally, many users report..." — Personal experience, not proof, but worth noting
• "We don't yet have high-quality data on..." — Honest admission of uncertainty

The Citation Standard

Every factual claim links to its source. You should be able to trace our recommendation back to the evidence.

What gets cited:

• Specific claims about efficacy or safety
• Dosing recommendations
• Physiological mechanisms
• Risk assessments
• Anything that could affect your decision-making

How we cite:

• Direct links to the PubMed abstract or the regulatory document
• Author, journal, year, and study size
• Key findings and limitations
• Our interpretation of what the data means

If you want to read the original study, you should be able to find it in seconds.

No Conflicts of Interest in Editorial Decisions

Here's what determines what we write and recommend:

• Evidence quality. What does the research actually show?
• Safety profile. What are the risks?
• Practical utility. Does this actually help people?
• Your best interests. Not ours.

Here's what does NOT determine our editorial content:

• Affiliate relationships. Yes, we earn commission on some product recommendations. This is disclosed separately. But affiliate eligibility never influences what we write about or what we recommend. If anything, the requirement to be transparent makes us more cautious.
• Sponsor relationships. We don't have them. If we ever did, you'd know about it.
• Personal bias. We try to catch this by being explicit about uncertainty and presenting legitimate debate fairly.

Updates and Corrections

Medical and supplement research is ongoing. New studies emerge. Our understanding evolves.

Our update policy:

• We review all guides on a regular schedule
• When significant new research emerges, we update relevant content
• We date our updates so you know when something was last reviewed
• We note what changed and why
• Corrections of factual errors happen immediately

If you spot a study we've missed or a factual error, you can get in touch. We take corrections seriously.

Expert Verification

For content covering clinical protocols — hormone replacement, pharmaceutical compounds, controlled substances — we encourage you to verify recommendations with a qualified healthcare professional.

This isn't because we're uncertain about the information. It's because applying any protocol to your individual biology requires expert assessment. What's appropriate for one person might be contraindicated for another.

Our responsibility: Provide accurate information and evidence.

Your healthcare provider's responsibility: Assess whether it applies to you and monitor your safety.

The Supplement Evidence Problem

Supplements are unique: less regulated than pharmaceuticals, but more complex than simple foods.

What we do:

• We require the same evidence standard for supplement recommendations as for anything else
• We distinguish between "has evidence for this claim" and "popular, but evidence is weak"
• We're transparent about study quality and funding sources (supplement companies often fund their own studies)
• We note where evidence is limited or conflicting
• We discuss practical aspects: absorption, timing, interactions with medications

What we don't do:

• Recommend proprietary blends (you can't assess whether they're effective)
• Uncritically repeat supplement company claims
• Recommend something just because it's popular
• Hide uncertainty to sound more authoritative

Transparency About Limitations

We're evidence-based, but evidence has limits.

• Long-term human studies are expensive and slow
• Individual variation is enormous
• Many questions don't have definitive answers yet
• Sometimes research contradicts itself

When we encounter these limits, we say so. "We don't know yet" is an honest answer.

Your Role

Read actively. Ask questions. If something doesn't cite a source or make sense, query it. Check the original papers if you're making an important decision based on our content.

This site is designed to be trustworthy, but trust shouldn't be blind. Informed reading — actually checking the evidence — makes you a better decision-maker about your own health.

— Seb