Drinking alcohol stops your body from burning fat, so fat builds up in your liver.

When mice and human liver cells were given alcohol, their bodies stopped burning fat properly and started storing more fat in the liver, which is exactly what the claim says happens when you drink alcohol.

When you drink alcohol, your liver prioritizes breaking it down, which messes up how your body burns fat. This causes fat to build up in the liver and spill into the blood as triglycerides.