From your answers to focused health action.
Each plan connects questionnaire signals to practical next steps across sleep, stress, nutrition, metabolism, prevention, and more.
Built by Andreas Holzhäuser
Meet the founder and see the scientific foundation
Founder, self-taught product builder and father of four
Rule-based educational model · method and limits published
A personal reason
Why I built LifeTrajectory
I’m Andreas Holzhäuser, founder of LifeTrajectory, a self-taught product builder and father of four. One question is deeply personal to me: What can I do today to remain physically capable, mentally alert, and present for my family for as long as possible?
I hope to live long enough to see my great-grandchildren grow up. That ambition led me to build LifeTrajectory: not as a medical promise, but as a transparent educational tool that turns longevity research into understandable next steps.
Andreas Holzhäuser Founder and developer of LifeTrajectory
Andreas Holzhäuser · verified LinkedIn profile Watch the 46-question video series on YouTubeTransparent foundations
How the calculation is grounded
LifeTrajectory adapts parts of its questionnaire structure and category-based rule framework. This reference is not an independent validation of LifeTrajectory.
View the original calculatorLifestyle risk factors and residual life expectancy at age 40, BMC Medicine (2014). It supports selected lifestyle-risk context, not every model coefficient.
Read the full studyLifeTrajectory adapts these foundations into an educational estimate and personalized feedback. It is not a clinically validated prediction, diagnosis, or substitute for medical care.
See the method, factors, version and sourcesAlcohol
Smoking
Physical Activity
Mobility Training
Sedentary Lifestyle
Workload Balance
Safety Risk Reduction
Diet and weight management
Carbohydrate consumption
Sweet consumption
Dairy consumption
Fruit / vegetable intake
Meat consumption
Sugary drink pattern
Which snack habits apply to you?
Coffee Balance
Diabetes / blood sugar
Cholesterol
Regular bowel movements
Blood pressure
Heart attack history
Family cardiovascular/metabolic history
Cholesterol
Sleep
Stress
Do you take part in regular cancer screening?
Dental Hygiene
Sun Protection
Strength Training
Family cancer history
Family Longevity Context
Older-generation Longevity Context
Social Health
Support Network
Loneliness Prevention
Purpose & Future Orientation
Cognitive Engagement
Air Quality
Unlock your full LifeTrajectory analysis
See which action areas matter most for you, in which order to tackle them, and where your strongest long-term health opportunities are.