Source brief: Organic acid analysis in the clinical laboratory
Clinical-laboratory context for organic acid analysis and why test interpretation depends on indication and method.
Read the source briefLongevity claims, explained without the hype.
Plain-English answers on peptides, rapamycin, NAD, gene therapy, biological age tests and biohacking - with evidence and sources when you want to go deeper.
What are you curious about?
Plain English first
Simple answers before labels and study detail.
Sources when you want them
Original sources stay attached to every serious claim.
No protocol guidance
No dosing, sourcing, stacking or self-administration instructions.
Updated daily
Fresh from the evidence desk
New source briefs, with the original link and the limits kept intact.
Source brief: The Clinical Applications of Low-Level Light Therapy
Review context for photobiomodulation and low-level light therapy claims.
Read the source briefSource brief: The Effect of Nicotinamide Mononucleotide and Riboside on Skeletal Muscle Mass and Function: A Systematic Review and Meta-Analysis
Systematic review/meta-analysis of NMN and NR effects on skeletal muscle outcomes.
Read the source briefMost people arrive here asking...
Start with a simple answer. Open the evidence only if you want more detail.
Simple answer
Is BPC-157 actually proven?
Not for broad injury recovery in humans. The evidence is still mostly animal, lab or indirect.
Read the simple answerSimple answer
Is rapamycin an anti-aging drug?
It is a real drug approved for other uses, but human anti-aging benefit is not proven.
Read the simple answerSimple answer
Do NAD supplements work?
Some may affect NAD biology, but that is not the same as proving they slow aging.
Read the simple answerSimple answer
Are biological age tests useful?
They can be interesting, but one number should not be treated as proof a protocol works.
Read the simple answerSimple answer
Is gene therapy reversing aging?
Not in normal consumer use. Most age-reversal gene therapy claims are experimental or misleading.
Read the simple answerSimple answer
What longevity basics actually matter?
The strongest basics are still sleep, exercise, cardiometabolic risk, nutrition and not overreading shiny claims.
Read the simple answerHow to read a longevity claim
Use the same three-step pattern whenever a claim sounds exciting, scary or too certain.
1
What people claim
Name the promise before judging it.
2
What the evidence says
The useful context without making you read a paper first.
3
What not to assume
The safety, legal and hype boundaries.
Browse by what you heard about
You do not need to know the scientific taxonomy. Start with the thing people are talking about.
Peptides people talk about online
BPC-157, TB-500, Semax and other claims where approval status, quality and self-experimentation risk matter.
Start hereDrugs being tested for longevity
Rapamycin, metformin, acarbose and other real medicines discussed beyond their approved uses.
Start hereSupplements and NAD boosters
NMN, NR, NAD drips and mitochondrial claims separated from marketing language.
Start hereBiological age and testing
Epigenetic clocks, biomarkers and what a test can or cannot tell one person.
Start hereGene therapy and age reversal
CRISPR, partial reprogramming and frontier claims with extra care around hype and risk.
Start hereBasics that actually matter
Exercise, sleep, protein, cardiometabolic markers and the less glamorous work with better human evidence.
Start hereKnowledge base: start here
Beginner-friendly pages for the questions people search before they reach forums or clinic menus.
Profile
BPC-157: what it is, what people claim and what the evidence says
BPC-157 is widely discussed because animal and mechanism studies make tissue-repair claims sound plausible, but strong human proof for gym injuries o...
Evidence:Mostly lab/animalRisk:High risk
Profile
TB-500: what it is, what people claim and what the evidence says
TB-500 is not proven to speed injury recovery in people.
Evidence:Early theoryRisk:High risk
Guide
Peptides, explained simply: approved medicines, clinic claims and research chemicals
A peptide is a short chain of amino acids.
Evidence:Regulatory watchRisk:High risk
Safety guide
What is a research peptide?
A research peptide is marketed for laboratory or research use, not as an approved human medicine.
Evidence:Regulatory watchRisk:High risk
Question
What is rapamycin?
Rapamycin, also known as sirolimus, is a real medicine approved for specific uses and a serious geroscience candidate.
Evidence:Human trial evidenceRisk:High risk
Mechanism
What is NAD?
NAD is a molecule involved in energy metabolism and repair pathways.
Evidence:Early theoryRisk:Lower risk
Guide
Biological age and biomarkers, explained simply
Biological age is an estimate of aging-related state, not a literal countdown.
Evidence:Human observational evidenceRisk:Lower risk
Guide
Gene therapy and age reversal, explained simply
Gene therapy is real medicine for specific diseases, but consumer anti-aging gene therapy is a different and much more speculative claim.
Evidence:Regulatory watchRisk:Experimental
Peptide questions people actually ask
Safe answers to high-intent questions without dosing, sourcing, vendor lists or self-administration instructions.
Questions people are actually asking
Based on the kinds of questions people ask in longevity communities, translated into safe, source-aware explainers.
Latest checked claims
Six recent checks, with deeper evidence inside each page.
peptides
Does BPC-157 heal tendon and ligament injuries in humans?
No strong human evidence shows that BPC-157 heals tendon or ligament injuries. Most support is animal, cell or mechanism-based, and internet recovery claims should not be treated as proven clinical benefit.
Evidence:Mostly lab/animalRisk:High riskStatus:Not approved
peptides
Does TB-500 speed injury recovery?
TB-500 injury-recovery claims are not supported by strong human clinical evidence. The claim often relies on extrapolation from thymosin beta-4 biology and should be treated as unproven.
Evidence:Early theoryRisk:High riskStatus:Not approved
Longevity drugs
Does rapamycin slow aging in humans?
Rapamycin has unusually strong aging-biology interest, but it is not proven to slow human aging or extend lifespan in healthy adults.
Evidence:Human trial evidenceRisk:High riskStatus:Off-label
NAD & supplements
Does NMN raise NAD+ and slow aging?
NMN may affect NAD-related biomarkers in some studies, but that does not prove it slows human aging. The stronger claim needs clinical outcomes, not only a molecule-level signal.
Evidence:Human trial evidenceRisk:Moderate riskStatus:Supplement status
NAD & supplements
Is NR better than NMN?
There is no simple evidence-based winner between NR and NMN for longevity. Comparisons depend on dose form, endpoints, product quality and whether the outcome is a biomarker or a health result.
Evidence:Human trial evidenceRisk:Moderate riskStatus:Supplement status
NAD & supplements
Do NAD IV drips reverse aging?
NAD IV anti-aging claims are not supported by strong evidence. Infusion marketing often uses cellular language that does not prove meaningful aging outcomes.
Evidence:Commercial claimRisk:High riskStatus:Status unclear
Latest deep guides
More context for readers who want the safe answer and the source trail.
Safety guide
Where do people get BPC-157? Legal routes, grey markets and what to avoid
People may encounter BPC-157 through clinic or telehealth offers, compounding claims, international clinics, clinical-trial discussions, social media...
Evidence:Regulatory watchRisk:High risk
Safety guide
How do people take BPC-157? The safe answer before you copy the internet
There is no universal safe way to take BPC-157 that this page can give.
Evidence:Regulatory watchRisk:High risk
Safety guide
What doctors prescribe peptides?
There is no single kind of doctor that safely covers every peptide claim.
Evidence:Regulatory watchRisk:High risk
Regulatory guide
Are compounded peptides FDA-approved?
No.
Evidence:Regulatory watchRisk:High risk
Question
Do GLP-1 drugs cause muscle loss?
GLP-1-based weight loss can include loss of lean mass, but 'lean mass' is not exactly the same as useful muscle.
Evidence:Human trial evidenceRisk:Moderate risk
Question
What is red light therapy?
Red light therapy, often called photobiomodulation, uses light exposure as a biological signal.
Evidence:Human observational evidenceRisk:Lower risk
Guide
Longevity drugs, explained simply
Some longevity-drug candidates are real, approved medicines.
Evidence:Human observational evidenceRisk:High risk
Guide
NAD and supplements, explained simply
NAD biology matters, and some precursors can affect NAD-related measures.
Evidence:Human trial evidenceRisk:Moderate risk
For deeper readers
Trackers, source directories and machine-readable indexes are still available - just not the first thing a beginner has to decode.
The evidence ladder
We ask a simple question first: how close is this claim to proof in real people?
- 1
Proven enough for standard use
Human evidence and accepted medical use for the specific purpose.
- 2
Promising but not settled
Some human data or strong early evidence, with important questions still open.
- 3
Mostly animal or lab evidence
Interesting science, but not proof it works in people.
- 4
Theory, hype or anecdotes
People talk about it, but reliable evidence is weak.
- 5
Regulatory or safety warning
The main story is approval status, legality, quality or risk.
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