Editorial team
Experts & authors
Every entry in the knowledge base is written or reviewed by someone with relevant medical, dietetic or scientific credentials. Below is our full editorial team.
dr Anna Kowalczyk
Editor-in-Chief, Molecular Biology
PhD in Molecular Biology (University of Warsaw), 8 years researching cellular aging
Anna studied molecular biology at the University of Warsaw, then spent eight years after her PhD in a lab researching the mechanisms of cellular aging and autophagy. She stumbled into science journalism almost by accident — frustrated by how easily her field's findings get oversimplified in the media, she started a blog explaining the biology of aging in plain language. That blog became the seed of VitMode. Today Anna oversees the entire editorial process, holding every piece to the same rigor her old lab demanded: primary sources, methodology checks, and honesty about the limits of the evidence. Outside work, she's a dedicated boulderer.
42 publications on the platform
Michał Nowak
Clinical Dietitian
MSc in Clinical Dietetics, certified sports-nutrition coach
Michał started out as a long-distance runner, before an injury forced him to rethink his career. Looking for a faster way back into shape, he discovered sports nutrition and never left — fascinated by the gap between the research and what "everyone knows" at the gym. He completed a degree in clinical dietetics, earned a sports-nutrition coaching certification, and ran his own practice for several years before joining VitMode. His writing keeps returning to one theme: a supplement won't replace the basics, but the right one, at the right time, makes a real difference — and that's the difference he tries to describe precisely, with citations instead of slogans. He still runs, though these days, as he puts it, purely for the fun of it.
31 publications on the platform
dr Piotr Zieliński
Endocrinologist
Specialist physician in endocrinology, scientific consultant
Piotr has practiced endocrinology for more than fifteen years, mostly in male hormonal disorders and metabolic health. He joined VitMode as a scientific consultant because, as he jokes, he got tired of explaining the same testosterone questions at every appointment and decided to write the answers down properly, once. He reviews content on hormone therapy, supplement pharmacology and drug interactions, making sure articles never turn into encouragement to self-supplement in situations that genuinely need diagnostics and medical supervision. His professional motto — "evidence first, enthusiasm second" — has come up more than once with a patient who arrived with a supplement plan they found online.
24 publications on the platform
Julia Wiśniewska
Editor, Neurohacking & Sleep
MSc in Cognitive Neuroscience, host of a sleep-optimization podcast
Julia studied cognitive neuroscience planning an academic career, but partway through her PhD she realized she cared more about explaining research than running it. She started a podcast on sleep optimization — first for a handful of friends, now followed regularly by tens of thousands of listeners — and that podcast opened the door to writing for VitMode. She specializes in chronobiology, nootropics and recovery protocols, and her pieces often start from a question she asked herself during her own sleep experiments — including one memorable month living on a 28-hour "day," which she doesn't recommend anyone repeat. Off the clock, she sleeps surprisingly little for someone who writes about it professionally, and she's the first to laugh about it.
27 publications on the platform
dr Katarzyna Lewandowska
Cardiologist
Specialist physician in cardiology, cardiovascular-prevention consultant
Katarzyna works as a cardiologist at a Warsaw teaching hospital and has spent years focused on cardiovascular prevention — trying, as she puts it, to convince people to change their habits before they end up on her ward, not after. She joined VitMode after a series of conversations with Anna at a lifestyle-medicine conference, where the two discovered they shared the same frustration: an internet full of contradictory claims about cholesterol, aspirin and heart supplements, with no clear signal of what's actually backed by research. She reviews content on cardiovascular health, lipid panels and pharmacological prevention, consistently distinguishing what helps a statistical population from what makes sense for a specific person. Off duty, she road-cycles — not for performance, but because, in her words, it's hard to write credibly about prevention without practicing it yourself.
0 publications on the platform
dr Marek Wójcik
Psychiatrist
Specialist physician in psychiatry, mental-health & sleep consultant
Marek specializes in psychiatry and spent most of his career at the intersection of psychiatry and sleep medicine, watching how often mood disorders and sleep problems feed each other — and how treating them separately tends to work worse than treating them together. Julia talked him into joining, having met him while both were working on the topic of insomnia: him from the clinical side, her from chronobiology. He reviews content on how supplements and lifestyle affect mood, stress and cognitive function, always underlining the difference between easing a symptom and treating its cause, and flagging when a topic goes beyond what's safe to handle on your own. He believes the biggest risk in popular mental-health content isn't too little information but too much of it with no sense of priority — and that's the hierarchy he tries to bring to his reviews.
0 publications on the platform