Co-Founder & Chief Science Officer
Sean Charsley is a science writer and researcher focused on translating peer-reviewed findings in genetics, nutrition, and longevity science into accessible educational content. He brings a journalism-informed approach to scientific communication, emphasizing clarity, nuance, and intellectual honesty about what the science does and does not yet show.
APOE is an important Alzheimer’s risk gene, but a result is not a prediction of destiny. Context, ancestry, family history, and counseling shape its meaning.
Fermented foods may influence the gut microbiome, but kimchi, yogurt, kefir, and kombucha are not interchangeable and more is not always better.
MTHFR has become shorthand for everything from fatigue to detoxification problems. The science is more measured. A useful result depends on nutrition, laboratory context, health history, and the specific decision being considered.
A fatty liver finding is easy to dismiss when a person feels well. MASLD can be an early signal that glucose, lipids, blood pressure, body composition, and liver health deserve a connected review.
The most useful AI recommendation is not merely personal. It should be understandable enough to question, monitor, and place within appropriate human oversight.
Polygenic risk scores combine information from many genetic variants to estimate relative susceptibility to common conditions. Their value comes from combining them with family history, labs, lifestyle, and professional guidance — not from treating DNA as destiny.
People can have meaningfully different glucose, insulin, and triglyceride responses to similar meals. Precision nutrition uses those differences to generate better hypotheses, but it still depends on dietary quality, context, and careful testing.
From collagen peptides and BPC-157 capsules to injectable growth hormone secretagogues, the peptide supplement landscape spans a wide spectrum of evidence quality. Here is how to tell them apart.
GLP-1 receptor agonists are the most widely discussed peptide-based therapy in medicine today. Understanding GLP-1 within the larger science of therapeutic peptides reveals why this class of molecules is so powerful, and what its rise signals for precision metabolic medicine.
Several therapeutic peptides act directly on the metabolic levers of body composition, lean mass preservation, fat mobilization, and insulin sensitivity. Understanding their mechanisms separates informed use from hype.
What you eat before, during, and after a peptide protocol is not incidental. Nutritional status influences peptide receptor sensitivity, enzyme activity, and downstream signaling in ways that can meaningfully amplify or blunt results.
Several classes of therapeutic peptides are generating serious scientific interest as longevity tools, not because they stop aging, but because they target specific biological mechanisms that drive cellular decline.
Glutathione is the body's master antioxidant. N-acetyl cysteine (NAC) is its most accessible precursor. Their biology is relevant to aging, detoxification, mitochondrial health, immune function, and the management of oxidative stress.
Standard dietary reference intakes assume an average population. Genetic variation means your actual requirements for specific micronutrients may differ meaningfully from that average and identifying where matters.
Coenzyme Q10 is essential for mitochondrial energy production and serves as a key antioxidant within cells. Its levels decline with age and are reduced by common medications, making it a meaningful consideration in longevity-focused supplementation.
Senescent cells are cells that have permanently stopped dividing but refuse to die. They accumulate with age and secrete inflammatory signals that contribute to tissue dysfunction and are now a major target in longevity research.
Vitamin D is essential for bone health, immune regulation, and a surprisingly wide range of biological processes. But how efficiently you synthesize, transport, and utilize it is meaningfully shaped by your genes.
Appetite is not simply a matter of willpower, it is a complex biological system regulated by hormones, neural circuits, gut signals, and genetic factors. GLP-1 occupies a central place in this system.
Not all patients respond equally to GLP-1 medications. Pharmacogenomics research is beginning to identify the genetic variants that predict superior or diminished response, setting the foundation for truly personalized obesity treatment.
Nutrigenomics studies the relationship between genetic variation and how the body processes, responds to, and needs specific nutrients. It is the scientific foundation for genuinely personalized nutrition.
Chronic low-grade inflammation, now recognized as a hallmark of aging, is associated with virtually every major age-related disease. Understanding what drives it and what moderates it is central to longevity science.
EPA and DHA from marine sources are among the most extensively studied dietary supplements in longevity research, with consistent evidence for cardiovascular, inflammatory, cognitive, and cellular aging effects.
Misunderstanding the difference between a genetic association and a guaranteed outcome is one of the most common and consequential, errors in consumer genetics. Here's why that distinction matters.
Mitochondria are far more than cellular power plants. Their health, number, and efficiency are intimately connected to energy, inflammation, aging, and longevity and they are significantly modifiable through lifestyle.
Your genome is largely fixed at birth, but how it expresses itself is dynamic and responsive. Epigenetics explains why identical twins aren't biologically identical and why lifestyle choices matter at the molecular level.
MTHFR is one of the most discussed genes in consumer genetics. Understanding what it actually does, what variants mean, and what they do not mean is essential for anyone navigating this area.
Creatine is the most researched performance supplement in history. But its biology of benefit extends well beyond athletic performance, to muscle mass preservation, cognitive support, and metabolic function in aging adults.
In 2013, a landmark paper described nine cellular and molecular hallmarks of aging. Updated in 2023 to twelve, these hallmarks provide a biological framework for understanding why we age and where interventions may help.
Single nucleotide polymorphisms are the most common form of genetic variation in humans. Understanding what they are and what they mean is the key to making sense of most genetic wellness reports.
GLP-1 receptor agonists represent a significant advance in metabolic medicine. Understanding the mechanisms behind their effectiveness and their limitations, is essential for informed clinical and patient decision-making.