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

LDL is Like Oxygen?! Ft’ Dr Peter Attia

7 Feb 2026 · 1 min

Watch on YouTube

1:10

In this brief YouTube dialogue, Speaker A introduces a provocative analogy that likens LDL cholesterol to oxygen: both are necessary but not sufficient for their respective outcomes—fire and atherosclerosis. Speaker A argues that, like oxygen, LDL is essential for bodily functions but its presence alone does not guarantee heart disease, challenging the prevailing medical focus on relentlessly lowering LDL levels. Speaker B pushes back, emphasizing the nuance that while the analogy highlights a flaw in “medical myopia,” it oversimplifies complex pathophysiology. The conversation culminates in a direct question to the audience—do they agree with Dr. Peter Attia’s view that LDL is akin to oxygen?—and invites viewers to explore a detailed 4,000‑word deep‑dive linked in the description.

A famous doctor once said LDL cholesterol is like oxygen to the body.
Sit down, shut up for a minute, and pay attention. Necessary but not sufficient is the relationship between oxygen and fire.
Now, I realize that analogy might be triggering to some people, but let me unpack it. And this isn't going where you think it's going. So the idea is that oxygen is necessary but not sufficient to cause a fire in the same way that LDL cholesterol is necessary but not sufficient to cause atherosclerosis. So, you know, oxygen I need it for a fire, but just because I'm breathing in oxygen doesn't mean my lungs are spontaneously combusting into flames. By the same token, just because you have LDL cholesterol, even high LDL cholesterol, doesn't mean you're going to get heart disease. Now, I love this analogy because it points out the flaw in the medical myopia, the keyhole focus on getting LDL lower and lower. Because what happens if you just drop oxygen lower and lower? Lower risk of a fire, but you might not end up where you want. Now, here's the plot twist. Who was that doctor? So do you agree with Dr. Peter Attia? Is LDL cholesterol like oxygen to the body? Leave your thoughts. If you want a nuanced deep dive, 4,000 words, about 25 pages, check out the link below.