Nick NorwitzMD PhD, Oxford-Harvard | Metabolic Health Educator | “Stay Curious”

Scientists Just Gene-Edited Humans to Lower Cholesterol (Really!)

28 May 2026 · 2 min

Watch on YouTube

1:31

In this YouTube commentary, the narrator discusses a recent headline‑making study where a one‑time CRISPR‑based gene‑editing treatment, delivered inside a liver‑targeted lipid nanoparticle, lowered LDL cholesterol by roughly 62% in humans. The central point emphasized is not the cholesterol reduction itself but the precision delivery platform that confines editing to the liver, avoiding germline changes and other tissues. This tissue‑specific approach is presented as a gateway to future therapies such as brain‑targeted treatments for Alzheimer’s, engineered immune cells for cancer, and muscle‑preserving interventions for aging. The narrator acknowledges ethical and safety uncertainties but argues this marks the direction of modern medicine. He also teases a separate “letter” in which he claims to have achieved equal or superior LDL and ApoB reductions without any gene editing, statins, PCSK9 inhibitors, or even carbohydrate restriction, urging viewers to read it for details.

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Scientists just edited human DNA to lower cholesterol. In a headline-breaking new study, they showed a one-time gene editing treatment dropped LDL by 62%, and it's being heralded as the cardiology breakthrough of the century. But cholesterol here isn't even the real story. The real breakthrough is how they did it, because this wasn't indiscriminate gene editing in humans. Rather, the gene editor, based on technology called CRISPR that won the 2020 Nobel Prize in Chemistry—kind of a big achievement—was it was packaged inside a lipid nanoparticle programmed to target the liver specifically. Not the brain, not the heart, not the muscle, and certainly not sperm or eggs. You're not passing this on to your kids, just the liver. And that technology, that precision, is the real story here. Cholesterol is just the headline, because once you can deliver gene editing tools to specific tissues, you can start imagining brain-targeted therapies for Alzheimer's disease, engineering immune system cells to fight cancer, muscle-preserving therapies for aging. And yes, this technology is powerful and comes with ethical concerns and maybe safety concerns we don't know about, but there is no question this is where medicine is headed. This isn't a cholesterol story, it's our first real glimpse of the future of human biology. If you want more details, see the deep dive below and subscribe to stay at the forefront of human health. I should also tease, in the letter I show how I outperformed the gene editing results for LDL and ApoB lowering without gene editing, without statins, without PCSK9 inhibitors, even without carbs and Oreos, if you know what that is. So check out the letter, it's a cool one.