Health & Body
Timing answers for your health, from everyday illnesses to recovery milestones. Find out how long colds, flu, and infections really last, when common medications like antibiotics or antidepressants start working, how long substances stay detectable in your system, and what realistic recovery timelines look like after surgery or injury. Every answer leads with the typical range, explains the factors that stretch or shorten it — age, severity, treatment, overall health — and flags the warning signs that mean it's time to see a doctor. Ranges reflect published guidance from sources like the CDC, Mayo Clinic, and Cleveland Clinic, not worst-case anecdotes.
How Long Does It Take to Recover from Hernia Surgery?
Recovery from hernia surgery takes about 1–6 weeks. Laparoscopic repair allows most people back to light activity in 1–2 weeks, while open repair typically takes 3–6 weeks for full recovery.
How Long Does Lisinopril Take to Work?
Lisinopril starts lowering blood pressure within about 1 hour of the first dose and peaks around 6 hours, but the full blood-pressure-lowering effect takes 2–4 weeks of daily use to develop.
How Long Does Implantation Bleeding Last?
Implantation bleeding usually lasts a few hours to 3 days, and is typically light spotting rather than a full flow. It occurs about 6–12 days after conception, around the time a period would be expected.
How Long Does Azithromycin Take to Work?
Azithromycin starts fighting bacteria within hours, and most people feel noticeably better within 2–3 days. Because it stays in the body for days, its effect continues even after the last dose.
How Long Does Sciatica Last?
4–6 weeks for most acute episodes. Chronic sciatica can persist for 3+ months. About 80–90% of cases resolve without surgery within 6 weeks with conservative treatment.
How Long Does Tamiflu Take to Work?
Tamiflu starts fighting the flu virus within hours, but noticeable symptom relief usually takes 1–2 days. It shortens overall illness by about a day when started within 48 hours of symptoms.
How Long Does a Concussion Last?
2–4 weeks for most people. About 80% of concussions resolve within 2 weeks. Post-concussion syndrome can extend symptoms for months in 10–30% of cases.
How Long Does Adderall Last?
4–6 hours for immediate-release (IR) and 10–12 hours for extended-release (XR). Effects vary by dose, metabolism, and individual body chemistry.
How Long Does a Stomach Bug Last?
1–3 days for norovirus, 3–8 days for rotavirus. Most viral gastroenteritis resolves within 1–3 days in healthy adults. Bacterial cases may last 1–2 weeks.
How Long Does Ibuprofen Last?
4–6 hours of pain relief per dose. Effects begin within 20–30 minutes and peak at 1–2 hours. The half-life of ibuprofen is approximately 2 hours.
How Long Does It Take for Hair to Grow Back?
Hair grows about 6 inches (15 cm) per year on average. After a buzz cut, expect a short style in 3–6 months. After chemotherapy, regrowth begins in 3–6 months with full coverage in 12+ months.
How Long Does It Take to Get Into Ketosis?
Most people enter ketosis within 2–4 days of eating fewer than about 50 grams of carbs daily, though it can take up to a week depending on your metabolism, activity, and starting diet.
How Long Does Morning Sickness Last?
Morning sickness usually begins around week 6 of pregnancy, peaks near weeks 9–10, and eases by weeks 12–16 for most people. A minority experience nausea into the second trimester or throughout pregnancy.
How Long Does Pink Eye Last?
7–14 days for viral pink eye, 5–10 days for bacterial (faster with antibiotic drops).
How Long Does the Flu Last?
5–7 days for most adults. Fever typically breaks within 3–4 days. Cough and fatigue can linger for 2+ weeks. Children and elderly may take longer.
How Long Does Weed Withdrawal Last?
Cannabis withdrawal symptoms usually begin 1–3 days after quitting, peak within the first week, and fade within 1–2 weeks. Sleep problems and mood changes can linger for several weeks in some people.
How Long Does Caffeine Withdrawal Last?
Caffeine withdrawal typically lasts 2–9 days. Symptoms begin 12–24 hours after your last dose, peak at 20–51 hours, and usually resolve within a week.
How Long Does Levothyroxine Take to Work?
Levothyroxine starts affecting your body within days, but noticeable symptom relief usually takes 3–6 weeks, and full effect on blood levels takes about 6–8 weeks.
How Long Does a Hangover Last?
12–24 hours for most people. Symptoms typically peak 12–14 hours after blood alcohol concentration returns to zero and resolve within a day. Severe hangovers can linger up to 72 hours.
How Long Does a UTI Last?
3–7 days with antibiotics. Uncomplicated UTIs often improve within 1–2 days of starting treatment.