That is reason why L-carnitine is known as a "conditionally essential" nutrient: Our body itself can produce L-carnitine
Over the 20th century, additional treatments were developed and FDA approved for treatment of overweight and obesity, including phentermine, phentermine/topiramate, orlistat, and naltrexone/bupropion
Martin Whyte, Associate Professor of Metabolic Medicine, University of Surrey This article is republished from The Conversation under a Creative Commons license
Written by: Ed Cooper Written on: April 24, 2026 Human biologist and longevity expert Gary Brecka has spent over two decades at the sharp end of functional medicine and biohacking, advising everyone from high-performing CEOs to next-gen professional athletes around the world on the most effective, cutting-edge ways to optimise their health
Because of this, its long-term safety and actual effectiveness in humans remain unproven, and many experts warn that the benefits seen in labs may not translate perfectly to the human body
indica -treated Chinese cabbage roots (Lee et al., 2011