Why the same diet plan keeps failing you

Lumen measures fat vs. carb burn each morning, then builds your nutrition plan around it — starting at $99.

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July 27, 2026 10:26am EDT

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Starts from $99 |

For people who've tried everything

The Cycle Ends Here

Every diet tells you what to eat.
Lumen shows you what your body actually needs.

Starts from $99

Start burning fat, not time

Affirm financing available, HSA/FSA eligible

Left: the Lumen breath sensor device labeled 'One breath. Total clarity.' Right: plated meals labeled 'Eat for your body' with a 70% fat burn reading at 7:40 AM

You've done this before. A new plan. New rules. Cut carbs. Count calories. Start over Monday. And for a while, it works. Until it doesn't.

Because the problem was never your discipline. It was following rules your body never asked for. With one breath each morning, Lumen measures whether your body is burning fat or carbs – then builds your daily nutrition plan around your metabolism in real time.

No templates. No guessing. Just data built around you.

Over 350,000 people have changed the way they lose weight.

Real people. Real results