The Claim

In healthy young men, 12 weeks of supplementation with L-carnitine and carbohydrates is associated with a 6% increase in whole-body energy expenditure during low-intensity exercise, primarily due to increased fat oxidation, with no observed changes in carbohydrate oxidation.

Source: Skeletal muscle carnitine loading increases energy expenditure, modulates fuel metabolism gene networks and prevents body fat accumulation in humans

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
45score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
1 study reviewed
In plain English

If healthy young guys take L-carnitine and carbs for 12 weeks, they might burn 6% more energy during light workouts — mostly by burning more fat, not carbs.

See the scientific wording

In healthy young men, 12 weeks of L-carnitine and carbohydrate supplementation is associated with a 6% increase in whole-body energy expenditure during low-intensity exercise, primarily due to increased fat oxidation, without changes in carbohydrate oxidation.

What the research says

1 study

  1. Study: Skeletal muscle carnitine loading increases energy expenditure, modulates fuel metabolism gene networks and prevents body fat accumulation in humans

    The study gave young men L-carnitine and carbs for 12 weeks and found they burned more energy during light exercise by burning more fat, just like the claim says.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.