# Carthalis — full LLM guide

> Carthalis is an AI health executive assistant and personal companion — your whole health story in one place, with wellness education and coaching across nutrition, fitness, sleep, and longevity. Not a medical device.

This is the extended machine-readable site guide for Carthalis. Each section lists key pages with their canonical URL plus a short, accurate summary pulled directly from the live page copy. Carthalis publishes wellness education only — never diagnosis, prescription, or treatment, and never a substitute for a qualified clinician. Not for emergencies — contact your local emergency line for urgent care.

## Site facts

- Brand: Carthalis
- Category: Personal health companion (wellness education and coaching, YMYL)
- Author of clinical-information articles: Aziz Mezlini, PhD — founder and lead scientist (machine learning, University of Toronto; postdoctoral training at Harvard Medical School; 15+ years applying AI to health and biology).
- Canonical domain: https://carthalis.ca
- Sitemap: https://carthalis.ca/sitemap.xml
- Carthalis is not a medical device. Carthalis provides wellness education, not medical diagnosis or treatment. Carthalis is not for emergencies — call your local emergency line for urgent care. Users control what they share.

## Main pages

- [Carthalis homepage](https://carthalis.ca): Carthalis is an AI health executive assistant and personal companion that unifies conversations, lab uploads, surveys, logs, and optional wearables into one wellness picture that deepens over time. It acts as your investigator, planner, and daily coach across nutrition, fitness, sleep, and medications, with research-informed wellness insights and 130+ educational wellness scores. Wellness education only — not diagnosis or treatment, not for emergencies, not a medical device. You own and control your data.
- [How It Works](https://carthalis.ca/how-it-works): Carthalis is a personal health companion that combines six optional pathways — chat, upload, survey, manual log, devices, and passive prompts — into educational wellness scores and a daily coaching home with follow-through tasks. Wearables are optional. Carthalis provides wellness education and coaching, not medical diagnosis, and is not for emergencies.
- [Features](https://carthalis.ca/features): Carthalis features include Digital Twin (130+ educational wellness scores), Pulse (daily coaching loop), Health Investigator (educational symptom exploration), and Integrations (Apple Health, Health Connect, labs, surveys). They work together as one personal health companion. Carthalis provides wellness education, not medical diagnosis.
- [Mobile](https://carthalis.ca/mobile): Carthalis is a personal health companion on iOS and Android — the same daily coaching, wellness scores, and chat you get on the web, with optional Apple Health or Health Connect sync on mobile. Connect what your phone already tracks, or start with chat, an upload, or a survey. Wellness education, not diagnosis.
- [Trust](https://carthalis.ca/trust): Carthalis is a personal health companion and wellness coaching platform that helps you build a health picture from conversation, lab uploads, validated surveys, manual logs, and optional wearable data — then explore 130+ educational wellness scores, get a daily coaching plan, and act on nutrition, fitness, and medications with follow-through. Carthalis provides wellness education and coaching, not medical diagnosis or treatment. It is not a medical device and is not for emergencies — call your local emergency line for urgent care. You control what you share: add data when you choose, export or delete when you want, and only share with research programs you opt into — participation is volunta…

## Features

- [Digital Twin](https://carthalis.ca/features/digital-twin): Carthalis Digital Twin is the educational wellness dashboard at the heart of your personal health companion — a progressive picture of 130+ wellness scores spanning longevity, strength, fitness, nutrition, environment, and everyday life signals. A digital health twin in Carthalis means scores that unlock as you choose to share data through conversation, lab uploads, validated surveys, manual logs, or optional wearables — not a clinical replica of your body. Depth examples include strength percentiles, ear age, pollen and air quality near you, life-expectancy estimates, and Life's Essential 8 lifestyle markers. Each score supports self-awareness, motivation, and connection to your daily coach…
- [Pulse](https://carthalis.ca/features/pulse): Carthalis Pulse is your daily coaching home inside a personal health companion — one screen for coaching cards, embedded Agenda tasks, and follow-ups that turn your wellness picture into today's plan. Built from chat, uploads, surveys, or optional devices. Wellness education, not diagnosis.
- [Health Investigator](https://carthalis.ca/features/health-investigator): Carthalis Health Investigator is a wellness-education feature within your personal health companion that helps you explore what symptoms might mean through guided questions, organized possibilities, and coach follow-ups — not medical diagnosis or emergency triage. When something feels off, you can start in chat with structured symptom exploration, review educational hypothesis cards, and receive long-running health investigation episodes with follow-up tasks on your daily plan so clarity continues without panic-Googling alone. Health Investigator works alongside Twin wellness scores, lab uploads, validated surveys, and optional wearables you choose to share, turning scattered worries into a …
- [Integrations](https://carthalis.ca/features/integrations): Carthalis integrations are optional pathways in your personal health companion — connect wearables, Apple Health, Health Connect, nutrition apps, or lab uploads when ready, or start with chat, uploads, and surveys alone. Every connection is additive; no device is required to begin your wellness picture and daily coaching plan. Wellness education, not diagnosis.

## Articles — calculators

- [Tdee Calculator](https://carthalis.ca/articles/tdee-calculator): Total daily energy expenditure (TDEE) is the kilocalories your body uses in a day — resting metabolism plus everyday movement — as an educational planning number, not a medical prescription. Carthalis is a personal health companion for nutrition clarity: try the TDEE calculator on this page using the Pavlidou RMR equation with WHO/FAO physical-activity level multipliers, then create a free account to save your estimate and unlock more accurate MET-based estimation plus meal suggestions, meal planning, and meal logging against your daily targets. On-page results use simplified PAL factors; the Carthalis app adds activity-specific MET depth when you log workouts or connect optional wearables. …
- [Calorie Calculator](https://carthalis.ca/articles/calorie-calculator): A daily calorie target estimates how many kilocalories approximate your total daily energy expenditure — resting metabolism plus everyday movement — as an educational planning number, not a medical prescription. Carthalis is a personal health companion that helps you see yourself clearly across nutrition and fitness: try the calorie calculator on this page using the Pavlidou RMR equation with WHO/FAO physical-activity level multipliers, then create a free account to save your estimate and unlock more accurate MET-based estimation plus meal suggestions, meal planning, and meal logging against your daily targets. On-page results use simplified PAL factors; the Carthalis app adds activity-speci…
- [Macro Calculator](https://carthalis.ca/articles/macro-calculator): A macro calculator estimates grams of protein, carbohydrates, and fat for your daily energy needs — educational planning numbers from total daily energy expenditure, not a medical prescription. Carthalis is a personal health companion for nutrition and fitness clarity: try the macro calculator on this page using the Pavlidou RMR equation with WHO/FAO physical-activity level multipliers, then split calories with Acceptable Macronutrient Distribution Range ratios for fat loss, maintenance, or muscle gain. Create a free account to save targets and unlock MET-based estimation plus meal suggestions, planning, and logging against daily goals. On-page results use simplified PAL factors; the app add…
- [Protein Calculator](https://carthalis.ca/articles/protein-calculator): A daily protein calculator estimates grams of protein for your energy needs and fitness goal — educational planning numbers from total daily energy expenditure, not a medical prescription. Carthalis is a personal health companion for nutrition clarity: try the protein calculator on this page using the Pavlidou RMR equation with WHO/FAO physical-activity level multipliers, then apply goal-based protein shares (about 25% of calories for weight loss or muscle gain, 20% for maintenance) while meeting the 0.8 g/kg RDA minimum. Create a free account to save targets and unlock MET-based estimation plus meal suggestions, meal planning, and logging against daily goals. On-page results use simplified …
- [Biological Age Calculator](https://carthalis.ca/articles/biological-age-calculator): Biological age refers to an educational wellness estimate of how lifestyle, fitness, blood biomarkers, and optional wearable signals may relate to aging patterns — distinct from the chronological age on your ID. Carthalis is a personal health companion that estimates biological and wellness age inside Twin after you create a free account, using profile surveys, uploaded labs, logged habits, and optional device data you choose to share. This article explains what biological age means, which research-informed inputs Carthalis uses — including LE8 cardiovascular health metrics and longitudinal wellness signals — and why we do not offer a simplified on-page calculator: meaningful estimates need …
- [Longevity Calculator](https://carthalis.ca/articles/longevity-calculator): A life expectancy calculator is an educational wellness tool that relates age, lifestyle habits, fitness signals, and optional health context to population-based longevity estimates — not a clinical mortality forecast. Carthalis is a personal health companion that explores personalized life expectancy and longevity-oriented wellness scores inside Twin after you create a free account, using profile surveys, uploaded labs, logged habits, and optional device data you choose to share. This article explains how longevity calculators use research-informed foundations such as national life tables and lifestyle adjustments, where those estimates fail, and why Carthalis does not offer a simplified on…
- [Ai Longevity Calculator](https://carthalis.ca/articles/ai-longevity-calculator): AI longevity estimation refers to educational wellness models that relate lifestyle, facial aging signals, blood biomarkers, and optional wearable data to longevity-oriented wellness scores — distinct from sensational online death clocks that imply clinical precision. Carthalis is a personal health companion that explores AI-informed longevity and biological-age estimates inside Twin after you create a free account, using profile surveys, uploaded labs, logged habits, and optional device data you choose to share. This article explains how Carthalis approaches AI longevity estimation with transparency and privacy-first design — you control what you share — and why there is no simplified on-pa…
- [Strength Standards](https://carthalis.ca/articles/strength-standards): Strength standards are educational fitness benchmarks that rank your one-rep max on common lifts — bench press, squat, deadlift, push-ups, pull-ups, and grip — against age-, sex-, and bodyweight-matched peers in the general population, not elite athletes only. Carthalis is a personal health companion that helps you see yourself clearly across fitness and recovery: try the strength percentile calculator on this page, then create a free account to save your percentile history, track lifts over time, and unlock your full Fitness workspace and Twin strength scores. Estimates draw on the Carthalis STRENGTH_PERCENTILES reference table and backend percentile_engine, with general-population calibrat…
- [Strength Percentile Calculator](https://carthalis.ca/articles/strength-percentile-calculator): A strength percentile is an educational fitness metric that ranks your one-rep max on a lift against age-, sex-, and bodyweight-matched peers using population reference tables — not a medical test or clinical assessment. Carthalis is a personal health companion that helps you see yourself clearly across fitness, nutrition, and recovery: try the strength percentile calculator on this page for bench press, squat, deadlift, and overhead press, then create a free account to save your results, track lifts over time, and unlock your full Fitness workspace and Twin strength scores. Estimates draw on the Carthalis STRENGTH_PERCENTILES reference table and backend percentile_engine, which calibrates g…
- [Average Bench Press](https://carthalis.ca/articles/average-bench-press): The average bench press refers to typical one-rep-max bench press strength for adults in the general population, expressed as a multiple of body weight and adjusted by age and sex — educational fitness context, not a medical test. Carthalis is a personal health companion that helps you see yourself clearly across fitness and recovery: try the bench press percentile calculator on this page, then create a free account to save your percentile history, track lifts over time, and unlock your full Fitness workspace. Estimates draw on the Carthalis STRENGTH_PERCENTILES reference table and backend percentile_engine for everyday lifters, not elite athletes only. Carthalis provides wellness education,…
- [Strong Bench Press](https://carthalis.ca/articles/strong-bench-press): A strong bench press refers to upper-body pressing strength that places an adult in roughly the top 10–15% of the general population for their age and sex, often expressed as about 1.5× body weight for men and 1.0× body weight for women — educational fitness context, not a medical test. Carthalis is a personal health companion that helps you see strength clearly over time: try the bench press percentile calculator on this page, then create a free account to save your percentile history, track lifts, and unlock your full Fitness workspace. Estimates draw on the Carthalis STRENGTH_PERCENTILES reference table and backend percentile_engine for everyday lifters. Strong, elite, and world-class ban…
- [Average Squat](https://carthalis.ca/articles/average-squat): Average squat benchmarks are educational fitness references that describe typical back-squat strength relative to age, sex, and body weight using population percentile tables — not a medical test or clinical assessment. For many adults, an average squat falls near one to one-and-a-half times body weight for men and roughly eight-tenths to one-and-two-tenths times body weight for women. Carthalis is a personal health companion that helps you see yourself clearly across fitness and recovery: try the strength percentile calculator on this page, select squat, and compare your one-rep max to age-matched peers using the STRENGTH_PERCENTILES reference table and backend percentile_engine. Create a f…
- [Average Pushups](https://carthalis.ca/articles/average-pushups): A push-up percentile is an educational fitness metric that ranks consecutive push-ups with proper form against age- and sex-matched peers — not a medical test or clinical assessment. Average push-up counts vary by age and sex on general-population charts. Carthalis is a personal health companion that helps you see yourself clearly across fitness and recovery: try the push-up percentile calculator on this page, then create a free account to save your results, track reps over time, and unlock your full Fitness workspace and Twin strength scores. Estimates draw on the Carthalis STRENGTH_PERCENTILES reference table and backend percentile_engine, calibrated for everyday people rather than elite a…
- [Ear Age Test](https://carthalis.ca/articles/ear-age-test): Ear age is an educational wellness estimate that relates how high you can still hear certain tones to typical age bands — curiosity-friendly context for your longevity picture, not a clinical hearing test. Carthalis is a personal health companion: on this page you can try a guided 30-second tone sweep from 8 kHz toward 22 kHz with headphones, mark where tones fade, and see an approximate ear-age band for motivation. Try the calculator on this page. Save your results with a free account to track changes over time and unlock related Twin scores — face age, heart age, epigenetic age, and fitness age — as you add profile, uploads, surveys, or optional wearables. The mapping uses research-anchore…

## Articles — guides and perspectives

- [Sleep Scores Guide](https://carthalis.ca/articles/sleep-scores-guide): A sleep wellness score is an educational summary of recent sleep duration, timing, and rest-quality patterns — how they may relate to recovery and daily wellbeing, not a clinical sleep-study diagnosis. Carthalis is a personal health companion that surfaces sleep wellness scores in Twin and your daily coaching home after you create a free account, using optional wearable sleep data from Apple Health or Health Connect, validated sleep surveys on Pulse (including ESS and ISI-style check-ins), and habits you log over time. This guide explains how to interpret sleep scores from wearables, why vendors disagree, what research links to feeling rested, and how Carthalis turns patterns into coaching c…
- [Medication Interaction Awareness](https://carthalis.ca/articles/medication-interaction-awareness): Medication interaction awareness refers to understanding when prescription drugs, over-the-counter medicines, herbs, and supplements may affect one another — educational context for conversations with your pharmacist or prescriber, not a substitute for professional medication review. Carthalis is a personal health companion that helps you log medications and supplements in Journey, run informational interaction checks against your wellness record, and keep regimen reminders on your daily Agenda after you create a free account. This article explains how drug interactions happen, categories often worth asking about, how Carthalis flags potential overlaps in the app, and when to call a pharmaci…
- [Get Paid For Health Data](https://carthalis.ca/articles/get-paid-for-health-data): Getting paid for health data refers to voluntary, opt-in programs where people may receive incentives — such as research participation rewards or platform points — when they choose to share wellness information for approved uses. Carthalis is a personal health companion that helps you build a health picture from conversation, uploads, surveys, and optional device data you control. Research participation and health-data reward programs on Carthalis are voluntary, transparent, and reversible — you decide what to share and can review consent at any time. The Health AI Marketplace and token rewards remain on a waitlist roadmap; today you can create a free account to use wellness tools and opt in…
- [Web3 Health](https://carthalis.ca/articles/web3-health): Web3 health refers to a vision for user-controlled health data — where consent, ownership, and optional research participation stay transparent instead of being locked inside corporate platforms that profit without user benefit. Carthalis is a personal health companion that helps you build a wellness picture from conversation, uploads, surveys, and optional device data you choose to share at your own pace. Today you can create a free account to use wellness tools, Twin scores, and daily coaching, and opt into voluntary research and health-data programs when invited. Blockchain tokenization, transferable tokens, and the full Health AI Marketplace remain on a waitlist roadmap — not guaranteed …
- [Articles Hub](https://carthalis.ca/articles): The Carthalis articles hub is your personal health companion's library of evidence-based fitness, nutrition, strength, and longevity guides. Browse educational articles with inline calculators on selected pages — try strength percentiles, TDEE estimates, and ear-age tests, then create a free account to save results and unlock deeper tools in the app. Longevity and biological-age articles explain methodology with honest signup paths; strength and nutrition pages use the same evidence bases as in-app Twin scores. Carthalis provides wellness education, not medical diagnosis, and is not a medical device. You control what you share.

## For partners

- [For Practitioners](https://carthalis.ca/for-practitioners): Carthalis for practitioners helps your patients stay on track between visits with a personal health companion — daily wellness plans, async coach follow-ups, and shareable educational summaries from the data they choose to share. Carthalis supports better decisions with clinicians; it is wellness education, not diagnosis, and not a medical device.
- [For Studies](https://carthalis.ca/for-studies): Carthalis for Studies helps research operators run cohort wellness programs with daily check-in compliance, participant rosters, and analytics dashboards visible to study admins. Demo mode uses sample data only; production access requires partnership contact. This B2B surface is separate from the consumer wellness companion app.
- [Partners](https://carthalis.ca/partners): Carthalis partners include research operators, wellness practitioners, and AI health tool providers who extend our personal health companion — daily coaching, wellness scores, and participant engagement — with user-first ethics. Partnerships start with a demo preview and a scoped conversation. Carthalis provides wellness education, not diagnosis.
- [Research](https://carthalis.ca/research): Carthalis research participation lets adults optionally contribute wellness survey responses and daily engagement signals to approved study programs — using the same personal health companion, educational wellness scores, and daily coaching they already choose to use. Participation is voluntary, transparent, and reversible. Carthalis provides wellness education, not medical diagnosis, and is not for emergencies.

## Company

- [About](https://carthalis.ca/about): Carthalis is a personal health companion that helps you see your health clearly and get a daily wellness plan from conversation, uploads, surveys, and optional devices. Our mission is ethical AI that works for you — you own your data and choose what to share. Carthalis provides wellness education, not medical diagnosis.
- [Team](https://carthalis.ca/team): Carthalis is built by leaders in machine learning and health AI — including founder Aziz Mezlini, PhD (University of Toronto) with postdoctoral work at Harvard Medical School. The team behind our personal health companion combines wellness coaching product craft with responsible AI for everyday health clarity. Carthalis provides wellness education, not medical diagnosis.
- [Careers](https://carthalis.ca/careers): The Carthalis careers page lists open roles on the team building a personal health companion — daily coaching, 130+ educational wellness scores, and ethical AI with user-owned data. Candidates apply through our contact form. Carthalis is wellness education, not medical diagnosis or emergency care.
- [Contact](https://carthalis.ca/contact): Contact Carthalis for account help, research and study partnerships, press inquiries, or business collaborations about our personal health companion. Submit the form on this page — a real team member replies, not an automated triage bot. Carthalis provides wellness education, not medical diagnosis.

## Trust and legal

- [Privacy](https://carthalis.ca/privacy): The Carthalis privacy policy explains how personal and health-related data is collected, used, stored, and your choices for access, correction, and deletion. Carthalis is a wellness education platform, not a medical device, and does not sell your identifiable health data to third parties.
- [Terms](https://carthalis.ca/terms): The Carthalis terms of service describe the rules for using carthalis.ca and the wellness platform — including account responsibilities, acceptable use, wellness education limits (not medical advice), intellectual property, liability, and governing law. Carthalis is not a medical device and does not provide diagnosis or treatment.
- [Cookie Policy](https://carthalis.ca/cookie-policy): The Carthalis cookie policy describes how carthalis.ca uses cookies and similar technologies — including essential authentication cookies, consent storage, Google Analytics measurement, and tags managed through Google Tag Manager. You can set preferences via our consent banner or browser controls. See the privacy policy for broader data use.

## Contact

- Website: https://carthalis.ca
- Trust and safety: https://carthalis.ca/trust
- Contact form: https://carthalis.ca/contact