The Halftime Brief
Biology, labs, and the second half.
Plain-English research on peptides, hormones, and longevity — physician-reviewed.
Showing all 636 articles
Peptide 101: the most-asked beginner questions answered
Peptide therapy FAQ for beginners. Plain-English answers on how peptides work, who prescribes them, and what to expect. Educational only.
How peptides are different from hormones
Peptides vs hormones in plain English: most hormones are peptides, but the labels describe different things. Here is the clean way to tell them apart.
How peptides are different from supplements
Peptides vs supplements in plain English: peptides are prescribed compounds prepared by a pharmacy. Supplements are not. Here is the clean way to tell them apart.
Peptides vs hormones: the overlap and the distinction
Every peptide is not a hormone, and every hormone is not a peptide. Here's a plain-English map of where the two overlap and where they diverge.
The four peptide families: a practical classification for patients
Peptide families explained in plain English: the four practical groups patients ask about — growth, healing, metabolic, and signaling. Not FDA-approved.
Advanced Lipid Panel FAQ: Cost, Fasting, and How Often to Test
Advanced lipid panel FAQ: what it costs, whether you need to fast, if insurance covers it, and how often to get one. Practical answers before you book a test.
Kisspeptin-10 Regulatory Status: Where It Actually Stands in 2026
Kisspeptin-10 regulatory status in 2026: why it sits outside the 503A compounding framework as a research tool, and what that means for legitimate access.
PCAB Accreditation Research: What the Quality Data Shows
PCAB accreditation research: what published quality and sterility data actually show about accredited versus non-accredited compounding pharmacies today.
VO2 Max FAQ: The Fitness and Longevity Questions Answered
VO2 max FAQ: what counts as a good score by age, how often to retest, and what the longevity research actually shows about this fitness metric.
Sleep Peptides vs Melatonin: How the Approaches Differ
Sleep peptides vs melatonin: how DSIP and melatonin differ in evidence, regulatory status, and what each one is actually studied to do for sleep.
Standard vs Advanced Lipid Panel: What the Extra Tests Add
Standard vs advanced lipid panel: what ApoB and Lp(a) testing add beyond total cholesterol, LDL, HDL, and triglycerides, and who actually needs it.
IGF-1 LR3 Regulatory Status: Where It Actually Stands in 2026
IGF-1 LR3 regulatory status in 2026: why it sits outside the standard 503A compounding framework, and what that means for legitimate access today.
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