Thyroid, testosterone, cortisol, and the rest — what to test, what's optimal, and what to do when numbers drift.
Hormones articles
- 🦋 Thyroid
Anti-TPO Antibodies High: What It Means for Your Thyroid
High anti-TPO antibodies signal Hashimoto's thyroiditis, an autoimmune thyroid condition. Learn what elevated TPO means and how to manage it.
9 min read - 📉 Hormones
Low Testosterone at 25-30: Causes, Symptoms, and What Your Blood Test Means
Why testosterone is declining in young men, what low T really means, diagnostic tests, and treatment options from lifestyle to TRT.
8 min read - 📉 Hormones
Testosterone 400, 450 or 500 ng/dL: Low or Normal?
Testosterone 400, 450 and 500 ng/dL all sit inside the lab range but low for many men. What each level means, and why symptoms and age matter more.
6 min read - ⚡ Hormones
IGF-1 Levels: The Growth Factor That Helps You and Ages You
What IGF-1 is, what high and low levels mean on a blood test, the IGF-1 and longevity paradox, and what optimal levels look like for health and aging.
9 min read - 🧬 Hormones
Free vs Total Testosterone: Why a Normal Result Can Still Feel Low
Total testosterone can look normal while free testosterone is low, often because of high SHBG. Which tests to ask for and what to check before TRT.
8 min read - 🦋 Thyroid
Full Thyroid Panel: The Tests Beyond TSH and What They Show
TSH alone can miss early thyroid disease. What a full thyroid panel adds, from free T4 and free T3 to thyroid antibodies, and how to read the results.
8 min read - 🔗 Hormones
SHBG High or Low: What It Means for Your Testosterone
What high or low SHBG means for free testosterone and estrogen, what pushes it up or down, and which tests to pair it with.
7 min read - 🦋 Thyroid
TSH 3.0 or 4.5 mIU/L: Normal or Too High? The Thyroid Gray Zone
TSH between 2.5 and 4.5 mIU/L is the thyroid gray zone. What 3.0 and 4.5 mean, when antibodies change the picture, and when treatment is considered.
7 min read - 💪 Hormones
Is YOUR Testosterone Low? Age-By-Age Reference [Calculator]
600 ng/dL looks normal but might be low for you. Functional ranges + the 7 tests you actually need.
8 min read