Insights | Manus SolisPerspectives on functional medicine, bioidentical hormone therapy, and the Vis Viva Method from Manus Solis.https://www.manussolis.ca/en-CACortisol, Adrenal Fatigue, and What's Actually Happening in Your Bodyhttps://www.manussolis.ca/blog/cortisol-adrenal-fatigue-truth/https://www.manussolis.ca/blog/cortisol-adrenal-fatigue-truth/Why 'adrenal fatigue' is not a recognized diagnosis, what chronic stress actually does to cortisol, and what evidence-based treatment looks like.Sat, 28 Mar 2026 00:00:00 GMTCortisolAdrenal FatigueStressHPA AxisFunctional MedicineOntarioTorontoDr. Handsun Xiao, MD, CCFPSupplements That Actually Matter vs Expensive Placebos: A Physician's Guidehttps://www.manussolis.ca/blog/supplements-that-matter-vs-placebos/https://www.manussolis.ca/blog/supplements-that-matter-vs-placebos/Which supplements have clinical utility for hormonal and metabolic health, which are overmarketed, and how to evaluate supplement claims critically.Mon, 23 Mar 2026 00:00:00 GMTSupplementsFunctional MedicineVitamin DMagnesiumOmega-3OntarioTorontoDr. Handsun Xiao, MD, CCFPWhy 'Age-Appropriate' Hormone Levels Are a Flawed Concepthttps://www.manussolis.ca/blog/age-appropriate-hormone-levels-flawed/https://www.manussolis.ca/blog/age-appropriate-hormone-levels-flawed/Why 'normal for your age' is not the same as optimal, and how functional medicine approaches hormone interpretation differently.Wed, 18 Mar 2026 00:00:00 GMTHormonesReference RangesFunctional MedicineBHRTTestosteroneOntarioTorontoDr. Handsun Xiao, MD, CCFPFive Things the Women's Health Initiative Got Wrong — and What We Know Nowhttps://www.manussolis.ca/blog/whi-got-wrong/https://www.manussolis.ca/blog/whi-got-wrong/A physician's analysis of the WHI study: what it actually tested, how its findings were misapplied, and what subsequent research has clarified.Fri, 13 Mar 2026 00:00:00 GMTWHIWomen's HealthHormone TherapyBHRTBreast CancerOntarioTorontoDr. Handsun Xiao, MD, CCFPThyroid and Hormones: Why You Can't Optimize One Without the Otherhttps://www.manussolis.ca/blog/thyroid-hormones-interconnection/https://www.manussolis.ca/blog/thyroid-hormones-interconnection/How thyroid function and sex hormones are interconnected, and why treating one without assessing the other produces incomplete results.Sun, 08 Mar 2026 00:00:00 GMTThyroidHormonesBHRTTestosteroneEstrogenFunctional MedicineOntarioTorontoDr. Handsun Xiao, MD, CCFPThe Case for Measuring Everything: Why Data-Driven Medicine Produces Better Outcomeshttps://www.manussolis.ca/blog/data-driven-medicine-measuring-everything/https://www.manussolis.ca/blog/data-driven-medicine-measuring-everything/Why comprehensive measurement across bloodwork, physical capacity, and patient experience produces better clinical outcomes than symptom-driven treatment alone.Tue, 03 Mar 2026 00:00:00 GMTData-Driven MedicineVis VivaLongevityFunctional MedicineMeasurementOntarioTorontoDr. Handsun Xiao, MD, CCFPWhat Peptide Therapy Is and Isn't: A Physician's Honest Takehttps://www.manussolis.ca/blog/peptide-therapy-honest-take/https://www.manussolis.ca/blog/peptide-therapy-honest-take/A balanced assessment of peptide therapy in longevity medicine. What the evidence supports, what remains speculative, and how to evaluate peptide offerings.Thu, 26 Feb 2026 00:00:00 GMTPeptidesLongevityFunctional MedicineGLP-1BPC-157OntarioTorontoDr. Handsun Xiao, MD, CCFPGrip Strength, Mortality, and What Your Body Is Telling Youhttps://www.manussolis.ca/blog/grip-strength-mortality-predictor/https://www.manussolis.ca/blog/grip-strength-mortality-predictor/Why grip strength is one of the strongest predictors of all-cause mortality, how it connects to hormonal health, and how to improve yours.Sat, 21 Feb 2026 00:00:00 GMTGrip StrengthLongevityMortalityExerciseVirtusOntarioTorontoDr. Handsun Xiao, MD, CCFPLifeLabs vs Dynacare: Getting the Most from Your Bloodwork in Ontariohttps://www.manussolis.ca/blog/lifelabs-vs-dynacare-bloodwork-ontario/https://www.manussolis.ca/blog/lifelabs-vs-dynacare-bloodwork-ontario/A practical comparison of LifeLabs and Dynacare for BHRT patients in Ontario. Coverage, test availability, and how to get the most accurate results.Mon, 16 Feb 2026 00:00:00 GMTBloodworkLifeLabsDynacareOntarioBHRTPatient GuideTorontoDr. Handsun Xiao, MD, CCFPVirtual Medicine in Ontario: How Telemedicine Works for Hormone Optimizationhttps://www.manussolis.ca/blog/virtual-medicine-ontario-hormone-optimization/https://www.manussolis.ca/blog/virtual-medicine-ontario-hormone-optimization/How virtual consultations work for BHRT and hormone optimization in Ontario, and why telemedicine is well suited to hormonal care.Wed, 11 Feb 2026 00:00:00 GMTVirtual MedicineTelemedicineBHRTOntarioHormone TherapyTorontoDr. Handsun Xiao, MD, CCFPCompounding Pharmacies in Ontario: What Patients Should Knowhttps://www.manussolis.ca/blog/compounding-pharmacies-ontario/https://www.manussolis.ca/blog/compounding-pharmacies-ontario/A guide to compounding pharmacies in Ontario for BHRT patients. What compounding is, how accreditation works, and what to look for in a pharmacy.Fri, 06 Feb 2026 00:00:00 GMTCompounding PharmacyBHRTOntarioPrescriptionsHormone TherapyTorontoDr. Handsun Xiao, MD, CCFPWhat to Expect at Your First Functional Medicine Consultationhttps://www.manussolis.ca/blog/first-functional-medicine-consultation/https://www.manussolis.ca/blog/first-functional-medicine-consultation/A step-by-step guide to your first functional medicine consultation: how to prepare, what the physician assesses, and how the treatment plan is built.Sun, 01 Feb 2026 00:00:00 GMTFunctional MedicineConsultationPatient GuideBHRTOntarioTorontoDr. Handsun Xiao, MD, CCFPHow to Read Your Own Blood Work: A Patient's Guide to Hormonal Lab Resultshttps://www.manussolis.ca/blog/how-to-read-your-blood-work/https://www.manussolis.ca/blog/how-to-read-your-blood-work/A practical guide to understanding your hormonal blood work. How to read testosterone, estradiol, thyroid, and metabolic markers, and what to ask your physician.Tue, 27 Jan 2026 00:00:00 GMTBloodworkLab ResultsHormonesFunctional MedicinePatient EducationOntarioTorontoDr. Handsun Xiao, MD, CCFPHRV, Resting Heart Rate, and What Your Wearable Is Actually Telling You About Your Hormoneshttps://www.manussolis.ca/blog/hrv-wearables-hormones/https://www.manussolis.ca/blog/hrv-wearables-hormones/How to interpret HRV and resting heart rate data from your wearable. What these metrics reveal about hormonal health, stress, and recovery.Thu, 22 Jan 2026 00:00:00 GMTHRVWearablesHormonesRecoveryVirtusOntarioTorontoDr. Handsun Xiao, MD, CCFPBrain Fog in Your 40s: When to Worry and What to Testhttps://www.manussolis.ca/blog/brain-fog-in-your-40s/https://www.manussolis.ca/blog/brain-fog-in-your-40s/How hormonal changes, thyroid dysfunction, insulin resistance, and sleep disruption cause brain fog in your 40s, and what blood work to request.Sat, 17 Jan 2026 00:00:00 GMTBrain FogCognitionHormonesPerimenopauseFunctional MedicineOntarioTorontoDr. Handsun Xiao, MD, CCFPWhy You Can't Sleep Anymore: The Hormonal Explanationhttps://www.manussolis.ca/blog/cant-sleep-hormonal-explanation/https://www.manussolis.ca/blog/cant-sleep-hormonal-explanation/How declining progesterone, estrogen, testosterone, and thyroid dysfunction disrupt sleep architecture in your 40s, and what to do about them.Mon, 12 Jan 2026 00:00:00 GMTSleepHormonesProgesteronePerimenopauseInsomniaOntarioTorontoDr. Handsun Xiao, MD, CCFPMetabolic Syndrome in Your 40s: What It Is and Why It Mattershttps://www.manussolis.ca/blog/metabolic-syndrome-in-your-40s/https://www.manussolis.ca/blog/metabolic-syndrome-in-your-40s/A physician's guide to metabolic syndrome: the five diagnostic criteria, why it develops in your 40s, and how to reverse it through metabolic and hormonal intervention.Wed, 07 Jan 2026 00:00:00 GMTMetabolic SyndromeInsulin ResistanceLongevityFunctional MedicineOntarioTorontoDr. Handsun Xiao, MD, CCFPThe Connection Between Blood Sugar and Hormones Your Doctor Isn't Makinghttps://www.manussolis.ca/blog/blood-sugar-hormones-connection/https://www.manussolis.ca/blog/blood-sugar-hormones-connection/How blood sugar dysregulation disrupts testosterone, estrogen, thyroid, and cortisol, and why glucose and insulin are central to hormonal health.Fri, 02 Jan 2026 00:00:00 GMTBlood SugarHormonesInsulin ResistanceMetabolic HealthFunctional MedicineOntarioTorontoDr. Handsun Xiao, MD, CCFPWhy Your Weight Loss Plateau Is a Metabolic Problem, Not a Willpower Problemhttps://www.manussolis.ca/blog/weight-loss-plateau-metabolic-problem/https://www.manussolis.ca/blog/weight-loss-plateau-metabolic-problem/Why caloric restriction stops working in your 40s, how hormonal and metabolic changes drive weight loss resistance, and what a physician-led approach looks like.Sun, 28 Dec 2025 00:00:00 GMTWeight LossMetabolic HealthInsulin ResistanceHormonesFunctional MedicineOntarioTorontoDr. Handsun Xiao, MD, CCFPVaginal Dryness, UTIs, and the Estrogen Connection No One Talks Abouthttps://www.manussolis.ca/blog/vaginal-dryness-utis-estrogen-connection/https://www.manussolis.ca/blog/vaginal-dryness-utis-estrogen-connection/Why recurrent UTIs, vaginal dryness, and urinary urgency in midlife women are often caused by estrogen decline rather than infection.Tue, 23 Dec 2025 00:00:00 GMTEstrogenWomen's HealthUTIMenopauseBHRTOntarioTorontoDr. Handsun Xiao, MD, CCFPWhy Birth Control Is Not Hormone Replacement Therapyhttps://www.manussolis.ca/blog/birth-control-is-not-hrt/https://www.manussolis.ca/blog/birth-control-is-not-hrt/Birth control pills and hormone replacement therapy both contain hormones, but they serve different purposes. Why the distinction matters for women approaching perimenopause.Thu, 18 Dec 2025 00:00:00 GMTBirth ControlHRTBHRTWomen's HealthPerimenopauseOntarioTorontoDr. Handsun Xiao, MD, CCFPHormone Therapy and Breast Cancer Risk: What the Evidence Actually Sayshttps://www.manussolis.ca/blog/hormone-therapy-breast-cancer-risk/https://www.manussolis.ca/blog/hormone-therapy-breast-cancer-risk/A physician's review of the evidence on hormone therapy and breast cancer risk. What the WHI actually tested and how bioidentical hormones differ from synthetics.Sat, 13 Dec 2025 00:00:00 GMTBHRTBreast CancerWomen's HealthHormone TherapyWHIOntarioTorontoDr. Handsun Xiao, MD, CCFPBHRT After Hysterectomy: What Changes and What Doesn'thttps://www.manussolis.ca/blog/bhrt-after-hysterectomy/https://www.manussolis.ca/blog/bhrt-after-hysterectomy/How hormone therapy changes after a hysterectomy. Whether you still need progesterone, how surgical menopause differs, and what a BHRT protocol looks like.Mon, 08 Dec 2025 00:00:00 GMTBHRTHysterectomyWomen's HealthHormone TherapyMenopauseOntarioTorontoDr. Handsun Xiao, MD, CCFPTestosterone for Women: What Your Doctor Probably Never Mentionedhttps://www.manussolis.ca/blog/testosterone-for-women/https://www.manussolis.ca/blog/testosterone-for-women/Why testosterone matters for women's health, how it influences libido, energy, and cognition, and why most physicians overlook it.Wed, 03 Dec 2025 00:00:00 GMTTestosteroneWomen's HealthBHRTLibidoHormone TherapyOntarioTorontoDr. Handsun Xiao, MD, CCFPProgesterone: The Most Underrated Hormone in Women's Healthhttps://www.manussolis.ca/blog/progesterone-underrated-hormone/https://www.manussolis.ca/blog/progesterone-underrated-hormone/Why progesterone is overlooked in women's health, what it does beyond reproduction, and its critical role in sleep, anxiety, bone density, and brain health.Fri, 28 Nov 2025 00:00:00 GMTProgesteroneWomen's HealthBHRTPerimenopauseHormone TherapyOntarioTorontoDr. Handsun Xiao, MD, CCFPHow Insulin Resistance Is Quietly Destroying Your Testosteronehttps://www.manussolis.ca/blog/insulin-resistance-destroying-testosterone/https://www.manussolis.ca/blog/insulin-resistance-destroying-testosterone/The bidirectional relationship between insulin resistance and low testosterone. How metabolic dysfunction drives hormonal decline and how to break the cycle.Sun, 23 Nov 2025 00:00:00 GMTInsulin ResistanceTestosteroneMetabolic HealthMen's HealthBHRTOntarioTorontoDr. Handsun Xiao, MD, CCFPTestosterone Pellets vs Injections vs Creams: Choosing the Right Delivery Methodhttps://www.manussolis.ca/blog/testosterone-delivery-methods/https://www.manussolis.ca/blog/testosterone-delivery-methods/A physician's comparison of testosterone delivery methods: injections, transdermal creams, pellets, and troches. How to choose the right option for your protocol.Tue, 18 Nov 2025 00:00:00 GMTTestosteroneTRTBHRTMen's HealthInjectionsOntarioTorontoDr. Handsun Xiao, MD, CCFPTestosterone and Cardiovascular Health: What the Research Actually Showshttps://www.manussolis.ca/blog/testosterone-and-cardiovascular-health/https://www.manussolis.ca/blog/testosterone-and-cardiovascular-health/A physician's review of the evidence on testosterone therapy and cardiovascular risk. What the TRAVERSE trial demonstrated and what patients should understand.Thu, 13 Nov 2025 00:00:00 GMTTestosteroneCardiovascularTRTMen's HealthBHRTOntarioTorontoDr. Handsun Xiao, MD, CCFPTRT and Fertility: What Men Need to Know Before Startinghttps://www.manussolis.ca/blog/trt-and-fertility-what-men-need-to-know/https://www.manussolis.ca/blog/trt-and-fertility-what-men-need-to-know/Testosterone replacement therapy suppresses sperm production. How TRT affects male fertility, what alternatives exist, and how to plan treatment accordingly.Sat, 08 Nov 2025 00:00:00 GMTTestosteroneTRTFertilityMen's HealthBHRTOntarioTorontoDr. Handsun Xiao, MD, CCFPWhy Your Testosterone Is 'Normal' but You Still Feel Terriblehttps://www.manussolis.ca/blog/testosterone-normal-still-feel-terrible/https://www.manussolis.ca/blog/testosterone-normal-still-feel-terrible/Why a testosterone level within the reference range does not mean your levels are optimal, and how free testosterone and SHBG reveal what standard blood work misses.Mon, 03 Nov 2025 00:00:00 GMTTestosteroneMen's HealthBHRTBloodworkFunctional MedicineOntarioTorontoDr. Handsun Xiao, MD, CCFPYour TSH Is Normal but You Still Feel Exhausted: A Functional Medicine Perspectivehttps://www.manussolis.ca/blog/tsh-normal-still-exhausted/https://www.manussolis.ca/blog/tsh-normal-still-exhausted/Why a normal TSH result does not rule out thyroid dysfunction, and how a complete thyroid panel reveals what TSH alone misses.Wed, 29 Oct 2025 00:00:00 GMTThyroidFunctional MedicineBloodworkFatigueOntarioTorontoDr. Handsun Xiao, MD, CCFPVO2 Max: The Single Best Predictor of How Long You'll Livehttps://www.manussolis.ca/blog/vo2-max-longevity-predictor/https://www.manussolis.ca/blog/vo2-max-longevity-predictor/Why VO2 max is the most powerful predictor of all-cause mortality, how it declines with age, and how to test and improve yours.Fri, 24 Oct 2025 00:00:00 GMTVO2 MaxLongevityExerciseFunctional MedicineVirtusOntarioTorontoDr. Handsun Xiao, MD, CCFPFasting Insulin: The Blood Test That Should Be Routine but Isn'thttps://www.manussolis.ca/blog/fasting-insulin-test-should-be-routine/https://www.manussolis.ca/blog/fasting-insulin-test-should-be-routine/Why fasting insulin is the earliest and most sensitive marker for metabolic dysfunction, how it connects to hormonal health, and why your doctor probably isn't ordering it.Sun, 19 Oct 2025 00:00:00 GMTInsulin ResistanceMetabolic HealthBloodworkFunctional MedicineOntarioTorontoDr. Handsun Xiao, MD, CCFPSigns of Low Testosterone Most Men Ignorehttps://www.manussolis.ca/blog/signs-of-low-testosterone-men-ignore/https://www.manussolis.ca/blog/signs-of-low-testosterone-men-ignore/A physician's guide to the early, often-missed symptoms of low testosterone in men. Why fatigue, irritability, and poor recovery are medical symptoms worth investigating.Tue, 14 Oct 2025 00:00:00 GMTTestosteroneMen's HealthLow TBHRTOntarioTorontoDr. Handsun Xiao, MD, CCFPPerimenopause Symptoms Most Women Miss: What Your Doctor May Not Be Looking Forhttps://www.manussolis.ca/blog/perimenopause-symptoms-women-miss/https://www.manussolis.ca/blog/perimenopause-symptoms-women-miss/Many perimenopause symptoms are dismissed as stress or aging. A physician's guide to the overlooked signs of hormonal decline in women in their late 30s and 40s.Thu, 09 Oct 2025 00:00:00 GMTPerimenopauseWomen's HealthBHRTHormone TherapyOntarioTorontoDr. Handsun Xiao, MD, CCFPWhat Bloodwork Do I Need Before Starting Testosterone? A Physician's Guidehttps://www.manussolis.ca/blog/bloodwork-before-starting-testosterone/https://www.manussolis.ca/blog/bloodwork-before-starting-testosterone/A detailed guide to the bloodwork and laboratory testing required before starting testosterone replacement therapy. Which markers to test, why each matters, and how comprehensive labs inform a safe protocol.Sat, 04 Oct 2025 00:00:00 GMTTestosteroneTRTBloodworkBHRTOntarioMen's HealthTorontoDr. Handsun Xiao, MD, CCFPBHRT vs Conventional HRT: Understanding the Differences That Matterhttps://www.manussolis.ca/blog/bhrt-vs-conventional-hrt/https://www.manussolis.ca/blog/bhrt-vs-conventional-hrt/A physician's comparison of bioidentical hormone replacement therapy (BHRT) and conventional HRT. Molecular differences, delivery methods, individualization, and how to choose the right path for hormonal optimization.Mon, 29 Sep 2025 00:00:00 GMTBHRTHRTHormone TherapyFunctional MedicineOntarioTorontoDr. Handsun Xiao, MD, CCFPIs BHRT Covered by OHIP? What Ontario Patients Need to Know About Costshttps://www.manussolis.ca/blog/is-bhrt-covered-by-ohip/https://www.manussolis.ca/blog/is-bhrt-covered-by-ohip/A clear breakdown of BHRT costs in Ontario: what OHIP covers, what it doesn't, what private insurance may reimburse, and how to plan for bioidentical hormone therapy expenses.Wed, 24 Sep 2025 00:00:00 GMTBHRTOHIPOntarioInsuranceHormone TherapyTorontoDr. Handsun Xiao, MD, CCFPBioidentical Hormone Therapy in Ontario: What Patients Should Know Before Starting BHRThttps://www.manussolis.ca/blog/bhrt-ontario-guide/https://www.manussolis.ca/blog/bhrt-ontario-guide/A physician's guide to bioidentical hormone replacement therapy (BHRT) in Ontario and Toronto. What to look for in a BHRT provider, how custom compounding works, and what to expect from a functional medicine consultation, available virtually across the province.Fri, 19 Sep 2025 00:00:00 GMTBHRTOntarioFunctional MedicineHormone TherapyTorontoDr. Handsun Xiao, MD, CCFP