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Preventive health, no barriers

Know your risk.
Before it's a diagnosis.

A free AI health screening for 12 chronic conditions, built on CDC health data from 2.6 million+ people. No doctor, no labs, no cost. Unlike one-time calculators, Regen AI lets you log your results, uncover health trends over time, and make smarter choices about your health.

12conditions
screened
2.6M+CDC records
analyzed
~3 minto
complete
Mini assessment

Model accuracy

We tested every model on real records it never saw during training. Here are our three strongest, scored by AUROC: 0.5 is a coin flip, 1.0 is perfect.

Depression isn't scored by a model. It comes straight from your answers on the PHQ-9, the same nine-question tool doctors use in clinic, so there's no accuracy figure to report for it.

Read the full methodology →
How it works

Three minutes to a clear picture.

Answer what you know, skip what you don't. The model does the rest.

01
Answer a few questions
Age, sex, blood pressure, and a handful of optional health details. Only age and sex are required, and partial answers still produce a useful estimate.
02
See your risk across 12 conditions
XGBoost models built on 2.6 million+ CDC health records return a personalized likelihood for each condition, compared to population data.
03
Track it, and act on it
Create a free account to save results, watch your top risks trend over time, and get screening options and nearby low-cost clinics.
What you get

More than a number. A center for prevention.

Your percentages are the start. An account turns them into a plan you can follow.

→
Risk trends over time
Your three highest risks, charted automatically across every assessment, so you can see whether your habits are working.
→
A companion that reads your history
Ask plain questions about your results and get answers grounded in your own assessments, not generic advice.
→
Screenings & nearby free clinics
Targeted, low-cost screening options for your highest risks, plus community clinics that offer free and sliding-scale care.

Your health shouldn't depend on your zip code.

Where you live and what you earn quietly decide whether you ever get screened. Millions skip preventive care, not because they don't care, but because a doctor's visit costs too much, sits too far away, or asks for insurance they don't have. Late diagnosis then costs far more, in money and in years. Regen AI removes the price tag and the gatekeeping. The same risk screening, free, for everyone, wherever you live, whatever you make.

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How Regen AI works

Regen AI estimates your risk for 12 chronic conditions from answers you already know. No doctor visit, no lab work, no cost. Take the free assessment →

The short version

You answer a set of questions about your health and habits. Regen AI runs those answers through statistical models trained on real, de-identified public health data, and returns a percentage for each condition. That percentage is an estimate of how your profile compares to people in that data. It is a screening signal to help you decide what to pay attention to, not a diagnosis.

The data behind it

The models are built on more than 2.6 million de-identified records from two public CDC health datasets. NHANES (1999 to 2023, about 66,000 adults) includes lab tests and measured blood pressure, and it trains every model. BRFSS (2019 to 2024, about 2.6 million adults) is a national phone survey that also trains six of them: heart disease, heart attack, stroke, cancer, arthritis and COPD. Both are government-collected surveys used widely in medical research. No individual in that data can be identified, and your answers are never added to it.

How the models work

Each of the 11 physical conditions has its own XGBoost model, a machine learning technique well suited to this kind of tabular health data. It learned which combinations of factors tend to be associated with that condition across the training population. When you complete an assessment, the model compares your inputs to those learned patterns and outputs a probability. A higher number means your profile looks more like people who had that condition in the data, it does not mean you have it or will get it. The models are also built so that risk never goes down as age, weight, blood pressure, blood sugar, smoking or time spent sitting goes up, and across the population their average predictions match how common each condition really is. Depression works differently: it's scored directly from your answers on the PHQ-9, the same questionnaire doctors use in clinic, not a trained model.

What it is not

Regen AI is an educational screening tool. It cannot diagnose, it does not see your full medical history, and it can be wrong in both directions. A low number is not a clean bill of health, and a high number is not a diagnosis. Always talk to a licensed clinician about anything that concerns you. If you are having a medical emergency, call your local emergency number.

Sources behind the lifestyle guidance

The health companion's suggestions are grounded in peer-reviewed research and major clinical guidelines, not general chat. Here's one landmark study per condition:

Kidney Disease: MDRD Study, Klahr et al., NEJM 1994;330:877-884
High Blood Pressure: DASH Diet Trial, Appel et al., NEJM 1997;336:1117-1124
Diabetes: Diabetes Prevention Program, Knowler et al., NEJM 2002;346:393-403
Cancer: WCRF/AICR Third Expert Report, 2018
Fatty Liver: PIVENS Trial, Sanyal et al., NEJM 2010;362:1675-1685
Stroke: INTERSTROKE Study, O'Donnell et al., Lancet 2016;388:761-775
Heart Attack: PREDIMED Trial, Estruch et al., NEJM 2018;378:e34
Heart Failure: HF-ACTION Trial, O'Connor et al., JAMA 2009;301(14):1439-1450
Heart Disease: Lifestyle Heart Trial, Ornish et al., Lancet 1990;336:129-133
Arthritis: IDEA Trial, Messier et al., JAMA 2013;310(12):1263-1273
COPD: Lung Health Study, Anthonisen et al., JAMA 1994;272(19):1497-1505
Find a free or low-cost clinic ↗

The 12 conditions we screen for

Regen AI runs one free assessment and returns a personalized risk estimate for 12 of the most common, and most preventable, chronic conditions in the U.S. Here's what each one is, what typically drives it, and the research behind our guidance. Screen yourself free →

How the model works →

Condition

What typically drives it

Recommended screening

Other conditions we screen for

Regen AI vs. traditional health risk calculators

Most online health calculators give you a single number and nothing else. Here's what actually sets Regen AI apart.

Traditional calculators
Regen AI
Cost
Usually free, sometimes paywalled results
Always free, every feature
Conditions screened
Typically 1 at a time
12 conditions in one assessment
Results over time
One-time score, no history
Tracks every assessment and charts your trend
Data behind the model
Often unclear or proprietary
2.6 million+ de-identified CDC records (NHANES and BRFSS)
Personalized guidance
Generic disclaimers
AI health companion grounded in your own results
Account required?
Sometimes, to see results
Never. An account is optional, only needed to save history
Screening & clinic guidance
Rarely included
Recommended screenings + nearby low-cost clinics

The core difference is simple: a traditional calculator answers "what's my risk right now?" Regen AI answers that question too, but then keeps answering it every time you check back in, showing whether your habits are actually moving the needle.

See the 12 conditions →

Health terms glossary

Plain-language definitions of the health terms you'll see most often in your Regen AI results and reports.

A1C

A blood test that shows your average blood sugar level over the past two to three months. It's one of the main ways diabetes and prediabetes are tracked. A normal A1C is below 5.7%, prediabetes is 5.7-6.4%, and diabetes is 6.5% or higher.

BMI (Body Mass Index)

A ratio of your weight to your height, used as a rough screening tool for whether someone is underweight, a healthy weight, overweight, or obese. It doesn't account for muscle mass or body composition directly, but it's widely used because it's easy to calculate and correlates with risk for several chronic conditions.

Blood pressure (systolic/diastolic)

The force of blood against your artery walls, written as two numbers: systolic (top number, pressure when your heart beats) over diastolic (bottom number, pressure when your heart rests between beats). A normal reading is below 120/80 mmHg.

LDL cholesterol

Often called "bad" cholesterol. High levels of LDL can build up in your artery walls, increasing risk for heart disease, heart attack, and stroke. It's typically measured through a lipid panel blood test.

HDL cholesterol

Often called "good" cholesterol, HDL helps remove other forms of cholesterol from your bloodstream. Higher HDL levels are generally associated with lower cardiovascular risk.

eGFR (estimated Glomerular Filtration Rate)

A measure of how well your kidneys are filtering waste from your blood, calculated from a blood test. A lower eGFR can indicate reduced kidney function. It's one of the main ways chronic kidney disease is staged.

Hypertension

The medical term for high blood pressure: sustained force against artery walls that's higher than healthy levels. It's often called a "silent" condition because it rarely causes noticeable symptoms.

Atrial fibrillation (AFib)

An irregular, often rapid heart rhythm that can increase the risk of stroke, heart failure, and other complications. It's one of the leading risk factors used in stroke risk models.

Insulin resistance

A condition where your body's cells don't respond normally to insulin, making it harder to regulate blood sugar. It's a common precursor to type 2 diabetes and is closely linked to fatty liver disease.

BNP (B-type natriuretic peptide)

A hormone released by the heart when it's under strain. Elevated BNP levels in a blood test can indicate heart failure, and it's commonly used to help diagnose and monitor the condition.

Spirometry

A breathing test that measures how much air you can exhale and how quickly. It's the standard test used to diagnose and monitor COPD and other lung conditions.

CRP (C-reactive protein)

A marker of inflammation in the body, measured through a blood test. Elevated CRP can be associated with arthritis, heart disease, and other inflammatory conditions.

See the 12 conditions →

Privacy & medical disclaimer

A plain-language explanation of what Regen AI is, what it does with your information, and what it can and can't do for you. No legal jargon, just straight answers.

Medical disclaimer

Regen AI is an educational tool for understanding your health risk. It is not a medical device and does not provide medical advice, diagnosis, or treatment. The percentages you see are statistical estimates that compare your profile to patterns in public health data. They are not a verdict on your health. Please don't use Regen AI to delay or replace care from a real clinician. If you think you may be having a medical emergency, call your local emergency number right away.

What we store

Only what you give us, and only if you create an account: your name, your email, and the assessment results you choose to save so you can track them over time. Sign-in and passwords are handled by a secure third-party authentication provider, which means we never see or store your password.

What we don't do

We don't sell your data. We don't add your answers to the model's training data. And we don't share your individual results with anyone for advertising. Your results are yours.

The AI companion

When you ask the health companion a question, your question and a short summary of your saved risk numbers are sent to a third-party AI provider to generate the reply. Because of that, please don't type in anything you wouldn't want handled by an outside service. And remember the answers are AI-generated: they can be imperfect, so treat them as general information to think about, never as medical advice.

Your choices

You're in control. You can stop using Regen AI at any time, and you can delete your account and saved data yourself from My Account in your dashboard. If you'd rather we handle it, just email us at the address below and we'll take care of it, no questions asked.

Contact

Questions about your data or this tool? Email hello@regenai.health, or use the contact form.

Support Regen AI

Regen AI is free, and it's staying that way. Running the risk models, storing your saved results, and powering the AI health companion all cost real money to keep online, and that's what a donation goes toward, keeping this available for people who don't have easy access to a doctor. There's no ad revenue funding this and no paid tier planned. We don't have a way to actually accept a donation yet, a real donate option is coming soon. For now, if you want to support Regen AI, sharing it with someone who could use it helps just as much.

Terms of use

The plain-language version of what you're agreeing to by using Regen AI. Same no-jargon approach as our privacy page.

Using Regen AI

Regen AI is free to use and is an educational tool for understanding your health risk, not a medical device and not a substitute for a doctor. See our medical disclaimer for the full explanation. You agree to use it for yourself, or for a family member you have the authority to make health decisions for through Family Accounts, not to misrepresent someone else's information as your own.

Your account

You're responsible for keeping your login secure and for the accuracy of what you enter. One account is meant for one person, plus whichever family members you choose to track under it. You can delete your account and data at any time from My Account.

Notifications and emails

When you create an account, you're automatically opted into our monthly check-in reminder, monthly summary, and weekly newsletter emails. You can turn any of these off at any time from My Account, or by using the unsubscribe option in the email itself. Turning off notifications never affects your ability to use Regen AI or access your saved data.

Donations

Donations made through our donate page are voluntary and go toward the cost of running Regen AI. They aren't a purchase, there's no product or service exchanged for them, and they aren't refundable except where required by law.

Changes to these terms

We may update these terms as Regen AI changes. If we make a significant change, we'll post the update here with a new effective date. Continuing to use Regen AI after a change means you accept the updated terms.

Contact

Questions about these terms? Email hello@regenai.health, or use the contact form.

Frequently asked questions

Answers to the most common questions about Regen AI's free online health risk assessment: how it works, what it screens for, and what causes the conditions it covers.

A free online health risk assessment estimates your likelihood of developing chronic conditions based on your health profile, without requiring a doctor visit, lab work, or insurance. Regen AI screens for 12 conditions using models built on more than 2.6 million de-identified CDC health records, and returns a personalized percentage for each one in about three minutes.

Regen AI screens for 12 chronic conditions: Kidney Disease, High Blood Pressure, Diabetes, Cancer, Fatty Liver, Stroke, Heart Attack, Heart Failure, Heart Disease, Arthritis, COPD, and Depression. You can read more about each one on The 12 Conditions page.

Yes, completely free, with no hidden costs. There's no insurance requirement, no doctor's visit, and no paywall on any feature, including tracking your results over time and getting personalized lifestyle guidance.

No, you can take a full assessment and see your results without signing up. Creating a free account just lets you save your results, track how your risk changes over time, and get personalized lifestyle recommendations.

Regen AI's models are statistical estimates, not diagnoses. Each condition has its own model trained on real, de-identified public health data, comparing your profile to patterns in that data. A higher percentage means your profile looks more like people who had that condition in the training data. It's a screening signal to help you decide what to pay attention to, not a clinical result.

No. Regen AI is an educational screening tool, not a medical device. It cannot diagnose you, and it doesn't replace a licensed clinician. A low score isn't a clean bill of health, and a high score isn't a diagnosis. Always talk to a doctor about anything that concerns you.

High blood pressure is driven by age, high BMI, excess sodium intake, low physical activity, and family history of hypertension. It's often called a "silent" condition because it rarely causes symptoms while quietly damaging the heart, brain, and kidneys.

Chronic kidney disease is most strongly associated with high blood pressure, diabetes, age, and family history of kidney problems. It often develops with no symptoms until function is significantly reduced, which is why early screening matters more than how someone feels.

The strongest risk factors for diabetes include high BMI, low physical activity, and family history of diabetes. Excess weight and low activity are the two factors most people can change fastest to reduce their risk.

Heart disease develops from a buildup of plaque in the arteries supplying the heart. The primary risk factors are high cholesterol, high blood pressure, smoking, diabetes, and family history of early heart disease. It's the leading cause of death in the U.S.

Stroke risk is most strongly influenced by high blood pressure, atrial fibrillation, diabetes, and smoking. Blood pressure alone accounts for a large share of stroke risk. Monthly checks can catch dangerous changes early.

Yes. We only store what you give us if you create an account: your name, email, and the results you choose to save. We never sell your data, never add your answers to the model's training data, and never share your individual results for advertising. See our privacy & disclaimer page for the full details.

Most calculators give you a one-time score and nothing else. Regen AI lets you log your results, track how your risk trends over time across all 12 conditions, and get an AI health companion and lifestyle guidance tailored to your own history. That turns a single number into an ongoing picture of your health.

There's no strict rule, but many people retake it every few months or after a meaningful lifestyle change, like starting a new exercise routine or getting new lab results. Because Regen AI tracks your history, retaking it regularly is what turns a single score into a trend you can actually act on.

Why Regen AI was made

The story behind the idea, and how it became what it is today. Curious what we screen for? See the 12 conditions →

Where it started

When I was young, my family had a cleaning lady who didn't have health insurance. She was also paid hourly, which meant that even when she was sick, she couldn't afford to stay home. Every missed day was money she needed. So she kept showing up to work sick, and her illness kept getting worse because she never had the chance to actually rest and recover.

A pattern, not an exception

Watching that happen taught me something I didn't have words for yet: health isn't just about biology. It's tangled up with money, with time, with whether you can afford to take a day off. The more I looked into it, the more I found the same pattern everywhere. People with lower incomes are statistically more likely to develop chronic conditions, not because they don't care about their health, but because healthcare access is uneven, insurance is expensive, and when you're working to make ends meet, a doctor's visit can feel like a luxury you can't justify.

A class project with a real problem behind it

That problem stuck with me. When I got the chance to build something for my Student Ventures class, I knew I wanted to build toward it. The first version of Regen AI was simple: a one-time risk calculator. You'd enter your demographics, vitals, labs, medical and family history, and lifestyle. Then a model trained on roughly 12,000 de-identified CDC/NHANES records would estimate your risk across what's now 12 chronic conditions. It worked, and it gave people real insight into their health for free, with no gatekeeping.

From a calculator to a center for prevention

But the more I used it, the more I realized a single risk score wasn't enough. Knowing your risk only helps if you can actually do something with it. So I rebuilt Regen AI into something bigger. Now you can log in, track your results over time, see how your risk in each condition is trending, get lifestyle recommendations based on your highest-risk areas, find nearby clinics, and talk to an AI health companion that helps you understand what your numbers actually mean for your day-to-day choices.

The person who made it possible

None of this would exist without Mr. Jaymes Dec, my Student Ventures teacher, who mentored me through every part of turning this from an idea into something real, including helping me actually get the model built and working.

Where it's headed

Regen AI is still growing. But it started from one simple belief: that understanding your own health risk shouldn't depend on how much money you have, or how easily you can get to a doctor.

Find a free or low-cost clinic ↗

Blog

Insights on preventive health, health equity, and how Regen AI is built.

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Contact us

Questions, feedback, a bug, or want your data removed? Send a message below and it'll come straight to us. You don't need an account.

Prefer email? Reach us directly at hello@regenai.health.

Partner with us

Regen AI is a free, nonprofit preventive health screening tool. If you run a community health center, clinic, employer wellness program, or community organization and want to offer free risk screening to the people you serve, we'd love to hear from you. There's no cost and no catch. This is about reaching more people, not making money.

Prefer email? Reach us directly at hello@regenai.health.

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Your results are ready. Review them above, then save them to track over time.
Your preventive health center

Overview

Here's where your health stands today.

We couldn't unlock your results

Your health data is encrypted, and the key didn't load this time. Your results are safe. Check your connection and try again, or sign out and back in.

Regen AI

Welcome to your health center

You haven't taken an assessment yet. Your first one sets your baseline. Every check-in after that shows whether things are moving in the right direction.

1 Answer what you know, skip what you don't
2 See your risk across 12 conditions
3 Log it here and track it over time
Your monthly check-in is due. Take a quick assessment to keep your streak going.
Your highest risk
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Monthly streak
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Last assessment
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Overall trend
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Top 3 risk trends

↓ Report
Your three highest risks, tracked across every assessment

Your lifestyle next steps

Practical actions based on your most recent assessment

Past assessments

Every condition from each assessment you've logged

Health companion

Answers grounded in your saved results · sources this draws from
Highest risk? What's improving? What next?

Recommended screenings

Low-cost options for your highest risks

Find free & low-cost care

Community health centers offer care on a sliding scale (often free) regardless of insurance.
Find a health center near you
Official HRSA finder: search by your address or ZIP
Examples of what you might find: community health centers (sliding-scale visits and labs), free clinics, and mobile health units that don't require insurance. Use the finder above for real locations near you.
Educational Q&A

Ask a doctor

Real medical professionals, answering general health questions, free, and in plain language.

How this works

We're building a rotation of volunteer physicians, residents, and med students to host live, general-education Q&A sessions. Not one-on-one diagnosis, but the kind of "wait, is this normal?" question everyone has and rarely gets to ask for free.
This is educational, not individual medical advice
Volunteers answer general questions about conditions, prevention, and how to read your own risk results. They won't review your personal file or replace your doctor.
Sessions are pro bono
Every volunteer donates their time. We're starting with one session and one volunteer before building out a full schedule.
Coming soon
We're recruiting our first volunteer clinician now. Leave your email or a question below and we'll notify you the moment the first session is scheduled.
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Shareable link for your doctor

Anyone with this link can view your most recent risk results, no login required. Your name and email are never included.

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Where this advice comes from

Your health companion's suggestions are grounded in peer-reviewed research and major clinical guidelines, not generic chat. One landmark study per condition:

Log this assessment

Enter the percentages your assessment showed. We'll save them with today's date and chart your top 3 automatically.

Leave any field blank to carry forward your previous value. Your three highest become your tracked trends.

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These aren't sent anywhere. They're stored on this device only, alongside this assessment's date, in case they're useful later.