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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 14 of 17
Longevity & PerformanceLongevity

A longevity plan or a supplement stack: what are you paying for?

How to assess the evidence, testing and follow-up behind a longevity service before paying for a plan.

3 sources · FDARead · 2 min →
Trust & Safety

Starting a GLP-1: which side effects need a call?

Digestive symptoms are common with semaglutide. Severity, persistence and accompanying symptoms determine how quickly to seek help.

1 source · NIHRead · 2 min →
Longevity & PerformanceLongevity

Frequent travel and fatigue: what is worth tracking?

A useful travel-fatigue record captures sleep timing, symptoms and daily function. Wearable scores can add context when their limits are understood.

3 sources · PubMed / PMCRead · 2 min →
Trust & Safety

Finasteride for hair loss: benefits, limits and timing

Finasteride can slow male pattern hair loss, but timing, the area of loss and continued treatment shape what a realistic result looks like.

2 sources · FDA, PubMed / PMCRead · 2 min →
Longevity & PerformanceLongevity

NAD+ and B vitamins for travel fatigue: what the evidence answers

Travel fatigue, vitamin deficiency and NAD+ marketing are different questions. A biological role alone does not establish an energy benefit.

4 sources · FDA, NIHRead · 2 min →
Biomarkers & Labs

Irregular periods, weight and PCOS: which findings establish the diagnosis?

Body size and an insulin number do not diagnose PCOS. How reproductive features and glucose assessment answer different questions.

2 sources · NIHRead · 2 min →
Biomarkers & Labs

Comparing telehealth services: what to verify before you book

Check who provides care, how follow-up works, what the service costs and when an in-person visit may be needed.

3 sources · FDARead · 2 min →
Trust & Safety

A thinner ponytail: how hair loss is evaluated

Hair-loss patterns, scalp symptoms and recent health changes guide the evaluation. Blood tests are selected when the findings point to a reason.

Read · 2 min →
Hormones & Vitality

Erection difficulties: what a health evaluation considers

Erection changes can involve circulation, medicines, stress and daily habits. Understanding the pattern helps clarify what needs attention.

1 source · NIHRead · 2 min →
Trust & Safety

Questions to ask at a first GLP-1 treatment discussion

Clarify the medication, formulation, medical rationale and follow-up before comparing GLP-1 offers.

3 sources · FDARead · 2 min →
Hormones & Vitality

Menopause, heart health, and bone density: different assessments

An estradiol result cannot replace cardiovascular risk assessment or bone-density testing. Learn how these health questions differ.

Read · 2 min →
Longevity & PerformanceLongevity

Postpartum fatigue: iron, thyroid and B12 questions

Postpartum fatigue can overlap with iron deficiency, thyroid changes and B12 deficiency. Symptoms and history help determine which tests are relevant.

5 sources · NIHRead · 2 min →