Wellness Desk
Short, sourced answers to one question each.
The lining of your blood vessels is a single cell thick and predicts cardiovascular events years ahead. It is also where erectile difficulty and cold hands come from.
SleepThe typical US gummy carries 5–10 mg. The dose used in sleep research is closer to 0.3 mg. More is not better here — it is measurably worse.
Stress & FocusThe adaptogen with the most respectable human evidence. Also the one where the extract name on the label decides whether you got the studied ingredient.
LongevityThe most predictive number in medicine, the cheapest to measure, and the one most people get wrong at home in the same four ways.
Sexual HealthArginine is the molecule your body turns into nitric oxide. That is exactly why supplementing arginine doesn't work very well.
NutritionHundreds of human trials, five grams a day, about fifteen cents. The only real decision is not to buy the expensive version.
Sexual HealthThe mechanism in plain language, why it declines with age, and what that does and does not mean about supplements.
Supplement ScienceA blend is legal, common, and makes a product impossible to evaluate. That last part is the point.
Skin & GroomingDecades of human trials for texture and fine lines. Also the active most likely to make you quit in week two, for reasons that are avoidable.
SleepA convenient format that delivers sugar, unverifiable doses and a bedtime glucose spike — in a product sold to fix your sleep.
LongevityLight timing sets nearly every daily rhythm in your body, it costs nothing, and the same sunlight is also the main driver of how your skin ages. Both things are true at once.
LongevityLDL-C measures the cholesterol inside the particles. ApoB counts the particles. Where they disagree, the particle count wins.
Stress & FocusAn entire supplement category is built on lowering a hormone you need. Here is what cortisol does, when it is genuinely a problem, and what "cortisol face" is really about.
NutritionRoughly 5% of adults hit the recommended intake. The evidence for fixing that is stronger than for most things sold as supplements.
Peptides & GLP-1Semaglutide and tirzepatide are the most effective weight-loss drugs ever brought to market. They are also prescription medicines with real side effects and a large grey market growing around them.
Supplement ScienceSix checks, in order. Most products fail one of the first three, which means you can stop reading and put the bottle down.
SleepMagnesium is genuinely involved in sleep and recovery, most people fall short, and the category still oversells it. Where the honest line sits.
Skin & GroomingThree mechanisms, three types of ingredient, and why the $12 tub is usually as good as the $90 one.
Supplement ScienceNSF, Informed Sport and USP test different things. "Made in a cGMP facility" tests nothing about your bottle.
Sexual HealthDesire and physical capability are two different systems with two different sets of inputs. Confusing them is the most common mistake men make about their own sex lives.
Supplement ScienceCost per serving, adjusted for whether the serving contains a real dose. Everything else on the shelf is designed to prevent you doing this.
Peptides & GLP-1A large share of the weight lost on a GLP-1 is lean mass. Two interventions blunt it, and both are things you would want to be doing anyway.
Stress & FocusRoughly half of adults fall short of the recommended intake, and the cheapest form on the shelf is the one your body absorbs worst.
Skin & GroomingOne blade costs cents, five blades cost dollars, and the reason multi-blade cartridges exist has more to do with patents than with your face.
SleepYour ring is not reading your brain waves. It is inferring sleep stages from movement and heart rate, and it is better at trends than at last night.
Skin & GroomingSPF above 50 is nearly a rounding error. The number that actually predicts whether sunscreen works for you is how likely you are to put it on again tomorrow.
LongevityBoth are strongly associated with all-cause mortality. Both respond to training. Neither requires a lab to start improving.
Sexual HealthLonger than the label implies and shorter than "give it a year." Here is what the trials actually measured, and what to check at each point.
Peptides & GLP-1The mechanism is real and genuinely interesting. The human outcome data is thinner than the marketing, and one of these was pulled from the US supplement market.
NutritionThe government minimum and the number that shows up in muscle research are different numbers answering different questions. Neither is a typo.
SleepThe mechanism is not relaxation. It is a rebound drop in core body temperature — which is also why timing matters more than temperature.
Peptides & GLP-1A peptide with encouraging animal data, almost no human trials, and a specific regulatory status that most sellers do not mention.
Stress & FocusMost nootropic stacks are a list of ingredients at doses nobody studied. This one is two cheap compounds with actual human trials.
LongevityThe longevity industry sells hundred-marker panels. Most of what predicts how long you stay healthy is on a standard blood draw and a blood pressure cuff.