Health · Longevity · Nutrition
Live longer, live better
Ten topics from longevity to lifestyle, twelve countries, twelve cities and calculators that run in your browser. Plus a longevity plan, blood test analysis, nutrition plan, sleep coaching and supplement consultation from people who answer.
Signature calculator
How old is your body, really?
Twelve questions about sleep, movement, food and habits, and within two minutes you get your estimated biological age and the three levers that bring you the most healthy years.
Ten topics
From sleep to sauna
5 articles
Longevity
Stay young longer
5 articles
Nutrition
Food as medicine
5 articles
Health
Knowledge instead of worry
5 articles
Sleep
The strongest medicine
5 articles
Fitness
Movement that lasts
5 articles
Weight
Lighter, not hungrier
5 articles
Mind
A clear head
5 articles
Supplements
Less, but right
5 articles
Healthy Aging
Age well, visibly
5 articles
Lifestyle
Everyday life that does you good
Programs & consultations
Five questions answered by people
Your personal longevity plan
How old is your body, really?
Biological age in two minutes from twelve inputs on sleep, movement, food, stress and habits.
Check nowUnderstanding lab values
What do your blood tests really say?
Eleven common values instantly with traffic light and reference range according to current guidelines.
Check nowFood that fits you
What does your plate look like?
Calorie target and protein, fat and carbohydrate amounts instantly from height, weight, age and activity.
Check nowFinally sleeping well
When should you go to bed?
Best bedtimes instantly from your wake-up time, with cycles and a buffer for falling asleep.
Check nowFewer capsules, more effect
Which supplements do you really need?
Instant sorting of 16 common supplements by your diet, sun, age, sport and goals.
Check nowNew in the magazine
Latest articles
Health
Understanding blood tests: the eleven values that really count
A lab report has thirty lines, eleven of them decide the coming decades.
Weight
Losing weight without dieting: the system that still holds after the diet
Nine out of ten diets end with the old weight plus two kilos.
Healthy Aging
Muscles as you age: recognizing and reversing sarcopenia
From 60 the body loses up to three percent of muscle mass a year, from 70 it becomes a question of falls and care.
Longevity
Biological age: what it measures and how to lower it
Your passport says 45, your body may say 39 or 52.
Sleep
Improving sleep quality: ten rules that actually work
It is not the hours in bed that count but the hours asleep.
Mind
Reducing stress: what happens in the body and what really helps
Acute stress is healthy, chronic stress makes you ill: high blood pressure, belly fat, sleep disorders, weak immunity.
Countries
Where people stay healthy the longest
Twelve countries with life expectancy, healthy years and the things they get right. Tap a dot.
All twelve countries on the world map, Europe in detail on the left.
World leaderVery highHighLife expectancy at birth; United States 79.3 years, United Kingdom 81.5
Cities
How old do people get in your city?
Life expectancy at birth in years, reference values 2026. The color shows the health index from air, green space, doctors, sun, sports and cycling.
The quiz
Athlete, Epicurean or Zen?
Eight questions, six longevity types, one result with an image to share on WhatsApp, Instagram and beyond.
Start the quizCalculators & checks
Calculate instead of guessing
Longevity Score
Twelve questions about sleep, movement, food, stress and habits: your estimated biological age and the three levers with the biggest effect.
OpenFitness Age Calculator
Resting heart rate, push-ups, one-leg stand, flexibility and grip strength: how old your body is functionally, in years.
OpenCalorie Calculator
Height, weight, age, activity: your basal metabolic rate, your daily needs and the calories to lose, maintain or gain.
OpenProtein Calculator
Weight, goal and activity: how much protein you need a day, how to spread it across meals and where it comes from.
OpenBody Fat Calculator
Height, weight, waist, neck and for women hips: your body fat percentage by the circumference method, BMI and fat-free mass.
OpenWeight Loss Planner
Current weight, target weight, pace: when you arrive, how many calories that means and how to keep muscle along the way.
OpenIntermittent Fasting Planner
Choose wake-up time and method: your eating window, the fasting phases and what happens in the body hour by hour.
OpenSugar Calculator
Tap the drinks and foods of one day: how many sugar cubes that is and how far you are above the WHO recommendation.
OpenSleep Calculator
When do you have to get up? The best bedtimes by 90-minute cycles, or the other way round: when you should wake up.
OpenCaffeine Calculator
Coffee, espresso, tea, cola, energy drink with time: how much caffeine is still in your blood at bedtime, as a curve.
OpenHeart Rate Zones
Age and resting pulse: your maximum heart rate and the five training zones after Karvonen, with zone 2 as the fat-burning range.
OpenStep Calculator
Steps, height, weight and pace: kilometers, calories, minutes and how much is missing to your daily goal.
OpenBlood Test Check
Cholesterol, LDL, HDL, triglycerides, glucose, HbA1c, vitamin D, ferritin, TSH, CRP, blood pressure: each value with a traffic light and explanation.
OpenStress Check
Ten questions about sleep, irritability, recovery and drive: your stress score with classification and three concrete countermeasures.
OpenSupplement Check
Diet, sun, age, sport, goals: which supplements make sense for you, which are optional and which you can skip.
OpenVitamin D Calculator
Month, city, skin type, minutes and how much skin is exposed: how much vitamin D your skin makes and whether it is enough in winter.
OpenBlood Alcohol Calculator
Drinks, weight, sex, time: your blood alcohol after Widmark, when you are sober again and what the evening costs your sleep.
Open