What the Vitality Score is
The Vitality Score is a 0–100 number that reflects the quality of your recent eating patterns. Think of it like a battery: meals heavy in sugar, refined carbs, or saturated fat drain it; time and better choices recharge it.
The 8 drivers
Every scan evaluates your meal across eight factors that nutrition research consistently identifies as important:
Sweeteners beyond what's naturally in whole foods
Processed grains stripped of fiber
Solid fats from animal products and tropical oils
Vegetables, whole grains, legumes, fruit
Meat, fish, eggs, dairy, legumes, nuts
Salt, especially from processed and restaurant foods
Deep-frying vs. grilling, steaming, baking
Beer, wine, spirits, cocktails
Fiber and protein are protective (they help the score). The others weigh it down when elevated. The combination determines a rating: Excellent, Moderate, Limit, or Avoid.
How the score moves
The Vitality Score models your day as a system, not isolated meals:
The score reflects your last 7 days. One heavy meal won't ruin a good week; one salad won't fix a bad one. The trend is what matters.
Score ranges
Weekly experiments
Each week, LivRight identifies your #1 opportunity — like "3 dinners after 8 PM" or "low fiber on weekdays" — and designs a 7-day experiment.
When it ends, you get a measured verdict from your own logged meals: "Dinner before 8 PM lifted your week by +9 vitality." If it worked, share the result. If not, you learn that too.
Post-meal activity
After a heavy meal, LivRight watches your Apple Health step count for 45 minutes. Walk 1,000+ steps (~10 minutes) and the meal is marked "walked" — a visible record of a good post-meal habit. This data stays on-device and is never sent to any server or AI.
What the score is not
- Not a glucose measurement — it does not read your blood sugar
- Not a medical diagnosis — it does not diagnose, treat, cure, or prevent any disease
- Not a calorie counter — it evaluates food quality patterns, not energy balance
- Not a substitute for professional advice — always consult your doctor
Sources and approach
The 8 drivers are based on nutritional science from Harvard T.H. Chan School of Public Health, the American Heart Association, Mayo Clinic, and the NIH. The scoring model is an approximation designed to make dietary patterns visible — it is not a peer-reviewed clinical tool.