Skip to content
THE VELRI LIBRARY

Understand your health. Know what to ask.

Guides to treatments, lab results and common health questions. Sources are listed in every article.

All guides

201 guides · Page 4 of 17
Longevity & PerformanceLongevity

Bone density and body composition: which DXA scan are you booking?

A bone-density scan and a whole-body composition scan answer different questions. Check what is measured before comparing results.

Read · 2 min →
Longevity & PerformanceLongevity

Postpartum fatigue: what ferritin and cortisol can tell you

Iron status can matter after childbirth, while cortisol tests answer specific endocrine questions. Persistent fatigue needs its full context.

6 sources · NIHRead · 2 min →
Trust & Safety

503A and 503B: how compounding oversight differs

What the two U.S. compounding frameworks mean for prescriptions, facility oversight and manufacturing requirements.

4 sources · FDARead · 2 min →
Weight & Metabolic

The first month of GLP-1 treatment: what early progress can look like

Early GLP-1 treatment involves tolerability and changing appetite. Long-term trial averages do not predict a first-month weight result.

2 sources · NIHRead · 2 min →
Biomarkers & Labs

Before a longevity panel: what makes a test useful?

An expanded panel is useful when its results answer a clear question. Here is how to assess the purpose, interpretation and follow-up.

Read · 2 min →
Trust & Safety

What “not FDA-approved” means for compounded semaglutide

The distinction applies to the finished preparation. What FDA has reviewed, what it has not, and why the individual medical reason matters.

3 sources · FDARead · 2 min →
Biomarkers & Labs

ApoB, Lp(a) and hs-CRP: three tests, different questions

ApoB reflects particle concentration, Lp(a) adds inherited risk information, and hs-CRP measures inflammation. How their roles differ.

Read · 2 min →
Hormones & Vitality

Sleep, alcohol and sexual function: what belongs in the review

Sleep patterns and alcohol use can matter when sexual symptoms persist. They are context for an evaluation, not proof of a single cause.

3 sources · NIHRead · 2 min →
Trust & Safety

Finasteride and brain fog: what is known

Brain fog has been reported with finasteride. Here is what FDA safety reports can tell you, what remains uncertain and why the formulation matters.

3 sources · FDARead · 2 min →
Biomarkers & Labs

Your first blood draw when you work nights

Night work does not make blood tests unusable. A clear collection plan records sleep timing, fasting instructions, medicines and the purpose of each test.

Read · 2 min →
Weight & Metabolic

GLP-1 “microdosing” for maintenance: what is established?

Maintenance trials support continued treatment in specific regimens. They do not establish that any tiny dose or intermittent schedule will preserve results.

6 sources · FDA, NIH, PubMed / PMCRead · 2 min →
Hormones & Vitality

Visceral fat around menopause: why the scale can miss a change

Research finds changes in abdominal fat and lean mass during menopause. What those findings mean, and what a waist measurement cannot prove.

3 sources · PubMed / PMC, NIHRead · 2 min →