#health

Fruit nutrition and botanical taxonomy as an API, built on the open Fruityvice dataset. Get every fruit with its scientific classification — family, genus and order — and its per-100g nutrition: calories, sugar, carbohydrates, protein and fat. Look up a single fruit by name, list every fruit in a botanical family (e.g. Rosaceae), genus (e.g. Prunus) or order (e.g. Rosales), or filter the whole catalogue by a nutrient range — for example all fruits with under 5g of sugar, sorted lowest first. Real data, no key needed upstream. Ideal for nutrition and diet apps, smoothie and recipe tools, health trackers and educational projects.

api.oanor.com/fruit-api

Global public-health data as an API, built on the open disease.sh dataset. Pull worldwide COVID-19 totals (cases, deaths, recovered, active, critical, tests and per-million rates), the same figures for any country (e.g. germany), continent (e.g. Europe) or US state (e.g. California), and the full sortable country list ranked by cases, deaths, tests and more. Track vaccine-coverage timelines globally or per country, and pull historical day-by-day case, death and recovery timelines for any country. Real data, no key needed upstream. Ideal for health dashboards, epidemiology research, data journalism and analytics.

api.oanor.com/disease-api

Sun-safety maths as an API, computed locally and deterministically — the burn-time, SPF and reapplication numbers a sunscreen, weather or outdoor app keeps people safe with. The burntime endpoint estimates how long until sunburn from the Fitzpatrick skin type (1 very fair to 6 deeply pigmented), the UV index and the SPF: unprotected time is a skin-type base (type II around 15 minutes) scaled by 6 ÷ UV index, and protected time is that times the SPF — so fair type-II skin at UV 8 burns in about 11 minutes bare, or roughly 5½ hours under SPF 30, while very fair type-I skin in extreme UV 11 burns in 5 minutes. The spf endpoint flips it: the SPF needed = your desired minutes outdoors ÷ the unprotected time, with the reminder that real protection plateaus around SPF 30–50. The amount endpoint covers the part people get wrong — about 2 mg/cm², roughly 1 ounce (30 g, a shot glass) for a full adult body, reapplied every two hours — and totals the sunscreen for a day out. Everything is computed locally and deterministically, so it is instant and private. Ideal for sun-safety, weather, skincare and outdoor app developers, UV-alert and reminder tools, and wellness software. Pure local computation — no key, no third-party service, instant. Educational estimates, not medical advice. Live, nothing stored. 3 compute endpoints.

api.oanor.com/sunscreen-api

Anthropometric body-metrics maths as an API, computed locally and deterministically. The body-surface-area endpoint computes the body surface area in square metres from height and weight by five established formulas — Mosteller √(height·weight/3600), DuBois, Haycock, Gehan-George and Boyd — with their average, the figure used for chemotherapy dosing and cardiac index. The lean-mass endpoint estimates lean body mass from height, weight and sex by the Boer, James and Hume formulas, with the fat mass and body-fat percent that follow. The waist-ratio endpoint computes the waist-to-hip ratio (fat distribution) and the waist-to-height ratio — where keeping your waist under half your height is the simple healthy rule — with WHO-style risk bands. Heights and circumferences are in centimetres, weight in kilograms. Everything is computed locally and deterministically, so it is instant and private. Ideal for health, fitness, clinical, telemedicine and wellness app developers, body-composition and dosing tools, and health education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is body surface area, lean mass and waist ratios; for BMI, body fat and ideal weight use a BMI API and for BMR and TDEE a BMR API.

api.oanor.com/bodymetrics-api

Blood-type compatibility as an API, covering the ABO and Rh(D) systems, computed locally and deterministically. The compatibility endpoint says whether a given donor can give to a given recipient, for both red blood cells and plasma — the red-cell rule being that the donor's antigens must be a subset of the recipient's (Rh included), and plasma being the reverse and ignoring Rh. The info endpoint describes a blood type: the antigens it carries, the antibodies in its plasma, every type it can receive red cells from and donate red cells to, who it can give plasma to, whether it is a universal red-cell donor (O−), universal red-cell recipient (AB+) or universal plasma donor (AB), and its approximate US population frequency. The donors endpoint lists every compatible donor type for a recipient, for red cells or plasma. Blood types are accepted in many forms (O-, O neg, AB positive, …). Everything is computed locally and deterministically, so it is instant and private. This is educational only — real transfusion requires laboratory cross-matching and clinical judgement, and it is not medical advice. Ideal for medical-education and first-aid apps, blood-donation and health tools, and quiz and reference sites. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is ABO/Rh compatibility; for a drug reference database use a drug API.

api.oanor.com/bloodtype-api

Blood-alcohol estimation as an API, using the Widmark equation, computed locally and deterministically. The estimate endpoint works out the peak and current blood-alcohol concentration — in both per mille (‰) and percent (%) — from the alcohol consumed, body weight, sex and the time elapsed since drinking, and tells you roughly how long until you are sober or back under a chosen legal limit. Alcohol can be given as grams, as US standard drinks, or as a drink volume and ABV. The drink endpoint is a standard-drink calculator: from a volume and ABV it returns the grams of pure alcohol, US standard drinks (14 g), UK units (10 ml) and EU standard drinks (10 g). The sober endpoint estimates the time for a current BAC to fall to zero or to a target limit at a chosen elimination rate. Everything is computed locally and deterministically, so it is instant and private. IMPORTANT: this is a rough estimate for educational use only — real blood-alcohol depends on many personal and situational factors. Never use it to decide whether it is safe or legal to drive; when in doubt, do not drive. Ideal for educational and harm-reduction tools, hospitality and event apps, and personal drink trackers. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is blood-alcohol maths; for the calories or nutrition of drinks use a food or nutrition API.

api.oanor.com/bac-api

Heart-rate training maths as an API. The max-heart-rate endpoint estimates maximum heart rate from age by the three common formulas — Fox (220 − age), Tanaka (208 − 0.7 × age) and Gulati (206 − 0.88 × age, validated for women). The zones endpoint returns the five training zones (recovery, endurance, aerobic, threshold and maximal) as beats-per-minute ranges, computed either as a simple percentage of the maximum heart rate or, when you give a resting heart rate, by the more accurate Karvonen heart-rate-reserve method. The target endpoint computes the target heart rate for any intensity, by percentage of max or by Karvonen. You can pass an age (and choose a formula) or give your own measured max heart rate. Everything is computed locally and deterministically, so it is instant and private. Ideal for fitness and running apps, wearables and gym equipment, coaching tools, and cardio training programmes. Informational only — not medical advice. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. This is heart-rate maths; for BMI, BMR and calories use a health-calculator API and for running pace use a pace API.

api.oanor.com/heartrate-api

Pregnancy and due-date maths as an API, using the standard Naegele's rule (40 weeks / 280 days from the last menstrual period). The due-date endpoint takes the last menstrual period, the conception date, or a known due date — whichever you have — and returns the due date, the estimated conception date and the fertile window. The gestational-age endpoint reports how far along a pregnancy is as of any reference date: gestational age in weeks and days, the trimester, days remaining, progress percent, and whether it is overdue. The milestones endpoint lists the key dates of a pregnancy — the trimester boundaries, the anatomy-scan window, viability at 24 weeks, full term at 37–40 weeks, the due date and post-term at 42 weeks. All dates are handled in UTC and computed locally and deterministically. Ideal for pregnancy and fertility apps, midwifery and clinical tools, and parenting and family-planning products. Informational only — not medical advice. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. This is pregnancy date maths; for general date arithmetic use a datetime API.

api.oanor.com/pregnancy-api

The World Health Organization's Global Health Observatory (GHO) as an API — authoritative global health statistics for every WHO member state. Search a catalogue of more than 3,000 health indicators spanning life expectancy and healthy life expectancy, mortality and causes of death, immunization and vaccine coverage, communicable and noncommunicable disease burden, maternal and child health, nutrition, mental health, health workforce, health financing, water and sanitation, and risk factors such as tobacco, alcohol and obesity. For any indicator, pull a country's complete time-series — each data point with its year, value, the WHO uncertainty interval (low and high bounds), the WHO region and the breakdown dimension (for example sex) — or compare the indicator across many countries for a chosen year, or the latest available year per country, ranked by value. Country codes are ISO3 (DEU, USA, JPN) or WHO region codes; results can be filtered by sex (both, male or female). Ideal for public-health research, journalism, NGO and policy dashboards, epidemiology and global-development analysis. Indicator codes come from the indicators endpoint (e.g. WHOSIS_000001 is life expectancy at birth). Data from the WHO Global Health Observatory.

api.oanor.com/who-api

Search the global clinical-trials registry as an API, powered by the U.S. NIH ClinicalTrials.gov database of 500,000+ studies. Find trials by medical condition, intervention or drug, free-text term, location and recruitment status (recruiting, completed, active, terminated and more), with paging across results, or pull a full study by its NCT id. Each record carries the title, overall status, study type and phases, conditions studied, interventions, lead sponsor, enrollment count, start and completion dates, eligibility criteria (sex, age range, healthy-volunteer policy) and the list of participating sites with city and country. Ideal for patient-matching and recruitment tools, pharma and biotech competitive intelligence, medical research dashboards, health portals and academic analysis.

api.oanor.com/clinicaltrials-api

A complete exercise and workout database covering 870+ exercises: search and filter by target muscle, required equipment, category, difficulty level, force type and mechanic, fetch a single exercise with step-by-step instructions, primary and secondary muscles and demonstration images, pull a random exercise matching any filter, and read all available facet values to build filter UIs. Every endpoint accepts input via the query string or the request body and returns lean, predictable JSON. Pure server-side data (no third-party upstream), so responses are instant and always available. Ideal for fitness and gym apps, workout planners, personal-trainer tools and health platforms.

api.oanor.com/exercises-api

A complete health & fitness calculator suite in one API: Body Mass Index with category and healthy-weight range, Basal Metabolic Rate (Mifflin-St Jeor and Harris-Benedict), Total Daily Energy Expenditure with weight-loss/gain calorie targets, macronutrient splits (balanced, low-carb, high-protein, keto, endurance) with fibre, U.S. Navy body-fat percentage, ideal body weight across four classic formulas (Devine, Robinson, Miller, Hamwi), and daily water intake. Every endpoint accepts GET query parameters or a JSON POST body and works in both metric and imperial units. All computation is done locally with established public-domain equations, so responses are instant and the service is always available. Ideal for fitness trackers, nutrition apps, telehealth and wellness dashboards.

api.oanor.com/healthcalc-api

Look up FDA drug labels — purpose, indications, dosage, warnings and ingredients — the most-reported adverse reactions for a drug (aggregated from FAERS), and FDA recall and enforcement records. Backed by openFDA. Useful for healthcare, pharmacy, telemedicine and drug-information apps. Not medical advice.

api.oanor.com/drug-api

Current air quality and hourly forecast for any location — European and US AQI plus PM2.5, PM10, ozone, nitrogen dioxide, sulphur dioxide, carbon monoxide, dust and UV index. Powered by Open-Meteo. Just pass a latitude and longitude.

api.oanor.com/airquality-api