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

Sourabh20022002 — Sat, 24 Jan 2026 16:48:05 +0000

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

DEV Community: Sourabh20022002

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