MedlinePlus
Health topics, drugs, medical tests, and patient education from the National Library of Medicine.
Visit official source ↗Understand your health. Prepare better questions.
Medical information, made human.
Explore diseases, symptoms, medications, side effects, body systems, mental health, prevention, and care options—without the clutter or alarm.
Source-led educationPlain-language designNo diagnosis or treatment claims
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SymptomsWhat you feel and notice
Body systemsHow parts work together
MedicinesBenefits, risks, labels
Healthy livingDaily actions that add up
Start where you are
Six ways into the health library
People do not always know the name of a condition. Begin with a symptom, body area, medication, goal, or life stage.
I have a symptom
Learn what details matter, when to seek care, and how to prepare for an appointment.
Explore symptoms →I know the condition
Browse common health issues by name, category, or body system.
Browse conditions →I have a medicine question
Understand labels, side effects, interactions, storage, and safe disposal.
Medication center →I want to learn the body
Explore the brain, heart, lungs, digestive tract, hormones, immunity, skin, and more.
Open body explorer →I want to feel better
Evidence-informed guides for movement, food, sleep, stress, connection, and joy.
Healthy living →I need the right care
Compare hospitals, verify clinicians, understand specialties, and prepare questions.
Find care resources →Popular health centers
Focused guides for major concerns
Heart health
Risk factors, symptoms, testing, prevention, and questions for your care team.
Diabetes
Blood glucose, A1C, types, daily care, complications, and support.
Cancer
Screening, diagnosis, staging, treatment types, side effects, and resources.
Mental health
Anxiety, depression, stress, sleep, therapy, crisis support, and resilience.
Blood pressure
How to measure, understand ranges, track readings, and seek help.
Skin health
Rashes, acne, eczema, psoriasis, infections, wounds, and skin cancer signs.
Women's health
Whole-life care, reproductive health, menopause, heart, bone, and mental health.
Men's health
Preventive care, prostate health, hormones, sexual health, and mental wellbeing.
Urgent symptoms
Know when not to wait
Some symptoms may signal a medical emergency. Call 911 in the U.S. or your local emergency number for severe or sudden symptoms such as trouble breathing, signs of stroke, crushing chest pressure, major bleeding, loss of consciousness, or a severe allergic reaction.
Do not use a website during an emergency.
When in doubt about immediate danger, seek urgent professional help.
Prepare for a non-emergency visit
Open appointment guides →Health literacy lab
Learn by doing
Use simple interactive tools to practice reading labels, tracking useful details, and understanding health concepts.
Medication label quiz
Practice finding warnings, dosing instructions, interactions, and expiration information.
Take the quizSource network
Go deeper with trusted organizations
Medical Health Issues helps orient readers, then connects them directly to authoritative public resources.
Centers for Disease Control and Prevention
Prevention, public health, healthy living, vaccines, and disease information.
Visit official source ↗U.S. Food and Drug Administration
FDA-approved medication information, safety alerts, labels, and adverse-event reporting.
Visit official source ↗A calmer health inbox
One useful guide at a time.
Newsletter concept for prevention checklists, care-navigation tips, health-literacy lessons, and major updates from trusted public-health sources.