# Live Better Wellness > An independent editorial publication on peptide science, nutrition, training, sleep, and longevity. Evidence and regulatory status kept apart from hype. Every article names its author and date, separates anecdote from preclinical and human evidence, and states regulatory status in Canada and the US. No dosing, reconstitution, or sourcing instructions for unauthorized compounds. ## Site - [Home](https://www.livebetterwellness.ca/) - [Library](https://www.livebetterwellness.ca/library): every article, filterable - [Editors](https://www.livebetterwellness.ca/editors) - [Editorial policy](https://www.livebetterwellness.ca/editorial-policy) - [Disclosures](https://www.livebetterwellness.ca/disclosures) ## Peptide Education 22 compounds. What each one is, what the evidence shows, and whether the thing in the vial is even authorized. - [Semaglutide: The Molecule That Made Appetite a Drug Target for Everyone](https://www.livebetterwellness.ca/peptides/semaglutide): Semaglutide is a GLP-1 receptor agonist authorized by Health Canada and the FDA as Ozempic and Wegovy for type 2 diabetes and chronic weight management. In STEP 1 adults with obesity lost roughly 15% of body weight over 68 weeks, and SELECT found about 20% fewer major cardiovascular events in people with obesity and existing heart disease. It is the best-studied compound on this site, and it manages a chronic condition rather than curing one. - [PT-141: The Desire Drug That Came From a Tanning Experiment](https://www.livebetterwellness.ca/peptides/pt-141): PT-141, or bremelanotide, is a melanocortin receptor agonist approved in the US as Vyleesi for hypoactive sexual desire disorder in premenopausal women; it is not marketed in Canada. The RECONNECT Phase 3 trials, enrolling well over a thousand women, showed genuine effects on desire alongside nausea and blood pressure increases. Grey-market vials sold as PT-141 are not the approved product. - [BPC-157: The Internet's Favourite Healing Peptide, Under the Microscope](https://www.livebetterwellness.ca/peptides/bpc-157): BPC-157 is a synthetic 15-amino-acid peptide derived from a protective protein in gastric juice, not authorized for human use in any country and flagged by the FDA over compounding safety concerns. Its reputation for healing tendons and gut rests almost entirely on rodent studies; there are essentially no published randomized human trials. Anecdotes about injuries turning a corner are what you would expect with or without a drug effect. - [Tirzepatide: How a Dual Agonist Raised the Ceiling on Weight-Loss Medicine](https://www.livebetterwellness.ca/peptides/tirzepatide): Tirzepatide is a dual GIP/GLP-1 receptor agonist authorized in Canada and the US as Mounjaro and Zepbound for type 2 diabetes and chronic weight management. In SURMOUNT-1 the highest dose produced average weight loss of about a fifth of body weight over 72 weeks, and it beat semaglutide 1 mg on blood glucose in a head-to-head trial. Weight returns after stopping, and the safety of decades of continuous use is unknown. - [SS-31: The Peptide That Goes Straight for the Mitochondria](https://www.livebetterwellness.ca/peptides/ss-31): SS-31, or elamipretide, is a four-amino-acid mitochondria-targeted peptide in formal clinical development, with no approval in Canada or the US. Unlike most forum peptides it has randomized, placebo-controlled human trials, in Barth syndrome, heart failure and mitochondrial myopathy, and the results are genuinely mixed. Long-term safety in healthy people has never been studied. - [Selank: Russia's Prescription Anti-Anxiety Peptide, Unlicensed Elsewhere](https://www.livebetterwellness.ca/peptides/selank): Selank is a seven-amino-acid tuftsin analogue approved in Russia as an anti-anxiety nasal spray and unauthorized in Canada, the US, and the EU. Russian trials, including comparisons against benzodiazepines, reported anxiolytic effects; independent Western replication is minimal. Products sold to Canadians online are unauthorized regardless of the Russian registration. - [NAD+: The Molecule Everyone Agrees Matters and No One Agrees How to Raise](https://www.livebetterwellness.ca/peptides/nad-plus): NAD+ is a coenzyme, not a peptide, that every cell uses for energy metabolism and DNA repair, and its levels decline with age. Oral precursors NR and NMN reliably raise blood NAD+ in human trials; what no trial has shown is that raising it improves human health or aging. IV and injectable NAD+ products vary by jurisdiction and are largely unproven. - [KPV: Three Amino Acids Chasing Inflammation in the Gut](https://www.livebetterwellness.ca/peptides/kpv): KPV is a three-amino-acid fragment of alpha-MSH, not an approved or investigational drug in Canada, the US, or Europe, with no clinical trial pathway attached to it. Its reputation for gut inflammation rests on mouse colitis studies and cell work; there are no randomized human trials, no dose-finding studies, and no formal safety data. Anecdotes from people with gut complaints cannot separate KPV from the natural waxing and waning of flares. - [Ipamorelin: The Growth Hormone Secretagogue That Never Finished the Race](https://www.livebetterwellness.ca/peptides/ipamorelin): Ipamorelin is a five-amino-acid growth hormone secretagogue built by Novo Nordisk in the 1990s, shelved after a failed trial, and never authorized for human use anywhere. Small volunteer studies showed growth hormone release with little cortisol or prolactin response, which is the whole basis of its reputation. Its long-term human safety is uncharacterized. - [DSIP: The Sleep Peptide That Science Half Forgot](https://www.livebetterwellness.ca/peptides/dsip): DSIP, delta sleep-inducing peptide, was isolated from rabbits in 1977 and has never been an authorized medicine in Canada, the US, or Western Europe. It has no identified receptor, degrades within minutes in blood, and the small 1980s insomnia trials were contradictory. Modern marketing as a sleep peptide leaves all of that out. - [GHK-Cu: The Copper Peptide Living a Double Life](https://www.livebetterwellness.ca/peptides/ghk-cu): GHK-Cu is a naturally occurring copper-binding tripeptide with two lives: a legal, widely sold cosmetic ingredient with small controlled studies on skin appearance, and an unauthorized injectable with no human trials behind it. Route decides everything. In a cream it is a legitimate cosmetic; in a syringe it is an unapproved drug. - [Sermorelin: The Growth Hormone Peptide With an Actual Regulatory Past](https://www.livebetterwellness.ca/peptides/sermorelin): Sermorelin is the first 29 amino acids of GHRH, once an FDA-approved pediatric growth hormone deficiency drug and now prescribed in the US through compounding pharmacies; no Health Canada-authorized product exists. Its human evidence is trials in children with GH deficiency plus small 1990s studies showing it raises GH and IGF-1 in older adults. No well-powered trial shows it improves body composition, sleep, or healthspan in healthy aging adults. - [TB-500: The Racehorse Peptide That Crossed Over to Humans](https://www.livebetterwellness.ca/peptides/tb-500): TB-500 is a synthetic fragment related to thymosin beta-4, not authorized as a human medicine in Canada, the US, or elsewhere, and first popular in racehorses. There are no published human trials of TB-500 itself; the animal evidence on wound and cardiac repair belongs to the full-length parent protein. Whether the fragment reproduces any of that biology in humans is untested. - [Kisspeptin: The Hormone That Switches On Reproduction](https://www.livebetterwellness.ca/peptides/kisspeptin): Kisspeptin is a natural hypothalamic hormone that sits at the top of the reproductive cascade, studied in formal human trials but with no approved product in Canada or anywhere else. Infusions reliably stimulate LH and testosterone in men and have triggered egg maturation in IVF. Repeated dosing can suppress the axis rather than stimulate it, which makes naive self-experimentation a bad bet. - [Epitalon: A Soviet-Era Longevity Peptide Meets Modern Scrutiny](https://www.livebetterwellness.ca/peptides/epitalon): Epitalon is a synthetic tetrapeptide modelled on a Soviet-era pineal gland extract, not an authorized drug in Canada, the US, or the EU. Its telomerase and lifespan claims come from older Russian studies, mostly of the gland extract rather than the synthetic peptide, with no modern randomized trials and no independent confirmation. There is no validated human dose and no long-term safety data. - [Semax: A Fragment of ACTH Repurposed for the Brain](https://www.livebetterwellness.ca/peptides/semax): Semax is a stabilized fragment of ACTH registered in Russia as a stroke drug and unauthorized in Canada, the US, and the EU. Russian studies report benefits in acute ischemic stroke and some cognitive complaints; the BDNF mechanism comes mostly from animal work, and independent replication is thin. How much of a nasal dose reaches human brain tissue is unknown. - [Tesamorelin: The Growth-Hormone Peptide That Actually Became a Medicine](https://www.livebetterwellness.ca/peptides/tesamorelin): Tesamorelin is a stabilized GHRH analogue approved in the US, and previously in Canada, for one indication only: HIV-associated lipodystrophy. Two Phase 3 trials showed a 15 to 18% reduction in visceral fat over six months, with the fat returning after discontinuation. No trial has shown a health benefit in people without lipodystrophy, and vials sold online are unauthorized products. - [Thymosin Alpha-1: An Immune Peptide Approved in Dozens of Countries, Not This One](https://www.livebetterwellness.ca/peptides/thymosin-alpha-1): Thymosin alpha-1, sold as thymalfasin, is a 28-amino-acid immune modulator approved in dozens of countries for hepatitis B and immune-compromised patients, and not authorized in Canada or the US. Its evidence is real but concentrated in specific patient populations; nothing shows benefit in healthy adults. Reports of fewer colds are among the noisiest outcomes a person can self-assess. - [MOTS-c: A Peptide Hiding Inside Your Mitochondrial DNA](https://www.livebetterwellness.ca/peptides/mots-c): MOTS-c is a 16-amino-acid peptide encoded in mitochondrial DNA, not authorized for human use anywhere. In mice it improved insulin sensitivity, limited fat gain, and boosted physical performance; in humans the data is observational, measuring circulating levels rather than testing injections. Whether exogenous MOTS-c does anything useful in people is untested. - [AHK-Cu: The Other Copper Peptide, Riding GHK-Cu's Coattails](https://www.livebetterwellness.ca/peptides/ahk-cu): AHK-Cu is a copper-binding tripeptide used in topical cosmetics, with no authorized drug product anywhere. Its hair-growth reputation rests on cell-culture studies of dermal papilla cells and small supplier-run cosmetic tests; there are no clinical trials. Whether it penetrates the scalp in meaningful amounts is unknown. - [Retatrutide: The Triple Agonist Trying to Out-Do Its Own Family](https://www.livebetterwellness.ca/peptides/retatrutide): Retatrutide is an investigational GIP/GLP-1/glucagon triple agonist from Eli Lilly, in Phase 3 trials and not authorized anywhere. Its 2023 Phase 2 obesity trial reported average weight loss near one-quarter of body weight at the highest doses over 48 weeks. Anything sold online under the name is unauthorized product, not the trial drug. - [CJC-1295: A Drug Programme That Died, a Peptide That Didn't](https://www.livebetterwellness.ca/peptides/cjc-1295): CJC-1295 is a long-acting GHRH analogue developed by ConjuChem in the 2000s and never authorized for human use in any country; its clinical development ended without a submission. Small early-phase studies showed sustained increases in growth hormone and IGF-1, and nothing beyond that hormone assay has been established. Long-term safety, including the cancer-risk question raised by sustained IGF-1, is unstudied. ## Nutrition How to eat well without turning dinner into a belief system. - [Ultra-Processed Foods: Think Pattern, Not Panic](https://www.livebetterwellness.ca/nutrition/ultra-processed-foods): Ultra-processed foods are a NOVA category, not a toxin. The harm is displacement and overeating: energy-dense, soft, fast-to-eat products that push out fibre and protein. Shrink the fraction of your diet they make up; a diet that is 20% ultra-processed and rich in plants and protein is a good diet. - [Hydration: More Isn't Always Better](https://www.livebetterwellness.ca/nutrition/hydration): Hydration: you are probably not chronically dehydrated. Your kidneys and thirst regulate body water within a narrow band, and urine colour (pale straw is fine, dark amber means drink) is the dashboard. Older adults, hard exercise in heat, and certain medications are where attention pays; drinking large volumes quickly during endurance events can cause dangerous hyponatremia. - [Protein After 40: Why It Deserves Attention](https://www.livebetterwellness.ca/nutrition/protein-after-40): Protein after 40: aging muscle responds less to the same meal, so the 0.8 g/kg recommendation set to prevent deficiency is too low for preserving muscle. Research in older adults points to roughly 1.2 to 1.6 g/kg per day, spread as 25 to 40 g per meal, with breakfast the meal most people miss. Pair it with strength training or it is raw material with no work order. - [Fibre: The Quiet Healthspan Habit](https://www.livebetterwellness.ca/nutrition/fibre): Fibre: most adults eat about half of what the evidence points to, and higher intakes keep landing near the top when large reviews pool diet and long-term health data. Get it from whole plants rather than fortified bars, and ramp up over weeks, not a weekend. It comes packaged with the vegetables, legumes, and whole grains that define a good plate. - [Build a Better Plate, Skip the Diet](https://www.livebetterwellness.ca/nutrition/build-a-better-plate): The plate template: half vegetables and fruit, a quarter protein, a quarter minimally processed carbohydrates. It caps energy intake without counting anything, because vegetables and protein are the most satiating foods per calorie. Diets fail on adherence; a default survives a busy life. ## Exercise & Strength Muscle and cardiorespiratory fitness are the closest things we have to longevity drugs. - [Cardio for Healthspan: Build the Engine](https://www.livebetterwellness.ca/exercise/cardio-engine): Cardio for healthspan: aerobic capacity declines a few percent per decade and faster after 60 if untrained. Build it the way endurance athletes do: most sessions easy, a weekly dose hard, in any modality you enjoy. The classic error is making every session moderately hard. - [Mobility vs. Flexibility: What You Actually Need](https://www.livebetterwellness.ca/exercise/mobility-vs-flexibility): Mobility is active control of a joint through its range; flexibility is passive range someone else can move you through. The ranges that disappear with age and desk life are predictable: deep squatting, overhead reach, hip extension, thoracic rotation. Ten to fifteen minutes a few times a week, mostly inside training you already do, keeps them. - [Walking: The Most Underrated Tool in Health](https://www.livebetterwellness.ca/exercise/walking): Walking: large meta-analyses show mortality risk falling steadily as daily steps rise, with the steepest gains between roughly 3,000 and 8,000 steps. It breaks up sitting, pulls glucose out of the blood, and doubles as recovery between lifting sessions. Attach walks to things that already happen. - [Strength Training for the Long Game](https://www.livebetterwellness.ca/exercise/strength-training): Strength training two focused sessions a week captures a large share of the available benefit at any age. Muscle is the body's largest site of glucose disposal, loading stimulates bone, and strength is associated with lower mortality. The common mistake is training too lightly, not too heavily. - [Train Hard, Recover Smarter](https://www.livebetterwellness.ca/exercise/recovery): Recovery is where fitness is built. In rough order of impact: sleep, adequate food, stress management, and light movement; gadgets sit at the bottom. Performance stalling across several sessions, a rising resting heart rate, and worsening sleep are the signals to rest. ## Sleep & Recovery Bad sleep quietly wrecks your training, your appetite, and your mood. Fix it first. - [Snoring, Fatigue and Sleep Apnea: Don't Ignore the Signs](https://www.livebetterwellness.ca/sleep/sleep-apnea): Obstructive sleep apnea is one of the most underdiagnosed common conditions in medicine: the airway narrows or collapses during sleep, sometimes dozens of times an hour, dropping oxygen and fragmenting sleep. Loud snoring plus daytime exhaustion is a screening question for your doctor, and a home sleep test is increasingly the first step. It is common, serious, and very treatable. - [Sleep Better: Start With the Boring Basics](https://www.livebetterwellness.ca/sleep/sleep-basics): Sleep basics: consistent timing, light management, a cool dark room, and caffeine discipline have the deepest evidence base, and nobody can sell them to you. Two systems govern sleep, adenosine-driven sleep pressure and the circadian clock, and those levers work on both. If you have been awake 20-plus minutes, get up; weekend sleep-ins and late naps undo the rest. - [Caffeine and Sleep: Timing Matters](https://www.livebetterwellness.ca/sleep/caffeine-and-sleep): Caffeine blocks adenosine, the molecule that signals sleepiness, and its half-life averages five to six hours with wide variation driven by the CYP1A2 enzyme. It borrows energy from tonight's sleep, and the interest rate depends on when you drink it. The fix is a cutoff time set at lunch, not giving up coffee. - [Why Sleep Changes How Training Feels](https://www.livebetterwellness.ca/sleep/sleep-and-training): Sleep changes how training feels: the same workout on six hours versus eight is a different workout. Deep sleep early in the night coincides with the day's largest growth hormone pulse, and adolescent athletes sleeping under eight hours have markedly higher injury rates. Treat sleep as part of the program, not what the program squeezes. ## Longevity & Healthspan More good years. That's the whole project. - [Muscle Is a Longevity Asset](https://www.livebetterwellness.ca/longevity/muscle-longevity): Muscle is a longevity asset: your largest metabolic organ, the main destination for blood glucose, and the reserve you draw on during illness or injury. Sarcopenia drains it from midlife, and strength and power fall faster than mass. Lifting plus protein funds the account; the bathroom scale is the wrong way to measure it. - [VO2 Max and the Long Game](https://www.livebetterwellness.ca/longevity/cardiorespiratory-fitness): VO2 max predicts long-term mortality more strongly than most famous risk factors, in analyses of hundreds of thousands of patients. The data is observational, but the case is stronger than a naive correlation, and unlike your birth year the number is trainable. Base work plus a weekly hard session raises it. - [The Boring Fundamentals Still Beat the Biohacks](https://www.livebetterwellness.ca/longevity/longevity-basics): The boring fundamentals beat the biohacks: don't smoke, train for both strength and cardio, eat well, sleep. The gap between doing these and doing nothing is enormous; the gap between them and the frontier is a rounding error, priced accordingly. Earn the right to tinker. - [Healthspan vs. Lifespan: Pick the Right Target](https://www.livebetterwellness.ca/longevity/healthspan-vs-lifespan): Healthspan versus lifespan: life expectancy in Canada sits in the low 80s and health-adjusted life expectancy is roughly a decade shorter. The project is compressing those sick years, which means training for the person you will be at 80. Muscle, VO2 max, sleep, and diet quality are the four biggest inputs. ## Real Experiences Transformation stories, with every variable on the table. - [One Transformation, Ten Variables](https://www.livebetterwellness.ca/stories/one-transformation-ten-variables): One transformation, ten variables: a composite 46-year-old loses roughly 18 kilograms in six months while changing ten things at once, including a prescribed GLP-1 drug, lifting, protein, walking, sleep, and alcohol. Semaglutide alone averages about 15% weight loss in its trials and can account for most of the fat loss. Crediting the newest or most expensive ingredient is astrology, not analysis. - [How to Read a Before-and-After Story Critically](https://www.livebetterwellness.ca/stories/how-to-read-transformations): A before-and-after story is a case report: an n of 1, no control group, self-selected, with outcome-based reporting. Interrogate the photos (lighting, posture, time of day) and then the causal claim. The trustworthy ones have multi-year timelines, visible setbacks, boring methods, and disclosed medications.