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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 11 of 17
Biomarkers & Labs

Telehealth or an in-person visit: choosing a starting point

The right visit format depends on what needs to be assessed. Compare scope, examinations, testing, and follow-up as well as travel time.

Read · 2 min →
Hormones & Vitality

New hives in perimenopause: is estrogen involved?

What estrogen and mast-cell research can explain, why hives are not always an allergy, and how symptoms guide testing.

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

GLP-1 treatment and a higher resting heart rate

Approved semaglutide labeling includes an increase in resting heart rate. Report sustained changes or a racing heartbeat at rest to the prescriber.

1 source · NIHRead · 2 min →
Biomarkers & Labs

Biological age tests: what the number can tell you

Biological age is an estimate built from selected markers. How it differs from calendar age and why a lower score is not proof of longer life.

3 sources · FDA, NIHRead · 2 min →
Longevity & PerformanceLongevity

How to evaluate a VO2 max testing or training program

Check how VO2 max is measured, how progress is compared, and what the program promises before paying for a longevity package.

2 sources · NIHRead · 2 min →
Trust & Safety

Hair shedding during weight loss: what gets checked

Weight change, illness, childbirth and other factors can precede shedding. The timing and scalp findings help distinguish the possibilities.

3 sources · NIHRead · 2 min →
Biomarkers & Labs

How to compare telehealth services before sharing your labs

Compare telehealth follow-up, lab review, privacy and in-person care before choosing a service.

Read · 2 min →
Hormones & Vitality

SHBG and a testosterone result that does not explain your symptoms

SHBG affects how testosterone is carried in blood. It can help interpret a result, but it does not diagnose the cause of fatigue or low libido.

3 sources · Endocrine SocietyRead · 2 min →
Biomarkers & Labs

Vitamin D tests and bone density: what each can tell you

A vitamin D blood test and a bone density scan measure different things. Postpartum weight changes do not automatically mean both are needed.

2 sources · NIHRead · 2 min →
Weight & Metabolic

Persistent nausea on a GLP-1: when to contact the prescriber

Nausea is a recognized side effect, but symptoms that persist, worsen or interfere with fluids deserve a review. Know which symptoms need urgent care.

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

Grip strength and walking speed: what they measure

Strength and walking tests describe physical function. Learn what they add to body weight and when a change deserves attention.

2 sources · PubMed / PMCRead · 2 min →
Weight & Metabolic

GLP-1 medicines and birth control: the tirzepatide distinction

Tirzepatide can reduce oral hormonal contraceptive effectiveness. Learn what its label says and why this should not be generalized to every GLP-1.

3 sources · NIHRead · 2 min →