I Built a Food Lifespan Calculator - Here's the Data That Powers It

The most shared piece of data from my food lifespan calculator: a hot dog costs 27 minutes of life.

Here's how the HENI research data works in code:

// 120+ static foods for instant results

const FOOD_DATABASE = [

  { name: 'Hot dog', impactMinutes: -27, calories: 290 },

  { name: 'Big Mac', impactMinutes: -24, calories: 550 },

  { name: 'Salmon', impactMinutes: 16, calories: 208 },

  // ...120+ more foods

];



// USDA API fallback for 300,000+ foods

const { impactMinutes, breakdown } = calculateLifespanImpact(nutrients);

The HENI formula I implemented:

• Fiber: +0.5 min/g (capped at +8)


• Processed meat: -0.45 min/g


• Sugar: -0.12 min/g (capped at -15)


• Trans fat: -2.0 min/g (most damaging)


• Saturated fat: -0.2 min/g


• Category bonuses: fruits/veg +5, fish +6, nuts +4

Stack: Next.js 14 + Tailwind + USDA FoodData Central API (free).

Hybrid approach: 120+ common foods load instantly (static), anything else hits USDA API and applies the HENI formula in real-time.

SEO: FAQPage JSON-LD schema targeting "food lifespan calculator" keywords.

Check it: lifebar.online/calculator