· Dr. Handsun Xiao, MD, CCFP
Why 'Age-Appropriate' Hormone Levels Are a Flawed Concept
Why 'normal for your age' is not the same as optimal, and how functional medicine approaches hormone interpretation differently.
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Thyroid and Hormones: Why You Can't Optimize One Without the Other
How thyroid function and sex hormones are interconnected, and why treating one without assessing the other produces incomplete results.
Lire la suite · Dr. Handsun Xiao, MD, CCFP
Testosterone for Women: What Your Doctor Probably Never Mentioned
Why testosterone matters for women's health, how it influences libido, energy, and cognition, and why most physicians overlook it.
Lire la suite · Dr. Handsun Xiao, MD, CCFP
How Insulin Resistance Is Quietly Destroying Your Testosterone
The bidirectional relationship between insulin resistance and low testosterone. How metabolic dysfunction drives hormonal decline and how to break the cycle.
Lire la suite · Dr. Handsun Xiao, MD, CCFP
Testosterone Pellets vs Injections vs Creams: Choosing the Right Delivery Method
A physician's comparison of testosterone delivery methods: injections, transdermal creams, pellets, and troches. How to choose the right option for your protocol.
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Testosterone and Cardiovascular Health: What the Research Actually Shows
A physician's review of the evidence on testosterone therapy and cardiovascular risk. What the TRAVERSE trial demonstrated and what patients should understand.
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TRT and Fertility: What Men Need to Know Before Starting
Testosterone replacement therapy suppresses sperm production. How TRT affects male fertility, what alternatives exist, and how to plan treatment accordingly.
Lire la suite · Dr. Handsun Xiao, MD, CCFP
Why Your Testosterone Is 'Normal' but You 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.
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Signs of Low Testosterone Most 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.
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What Bloodwork Do I Need Before Starting Testosterone? A Physician's Guide
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.
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