Even if healthy, slim people on a keto diet have very high 'bad' cholesterol, it doesn't seem to be linked to buildup in their heart arteries.

People who are lean and healthy and eat a strict low-carb keto diet for years — even if it raises their 'bad' cholesterol a lot — don’t seem to have more heart plaque than similar people with lower cholesterol.

People who are fit and healthy and eat a keto diet sometimes have high cholesterol — but this claim says their arteries aren't more clogged than others with lower cholesterol.

People who eat a lot of fat and very few carbs tend to have higher cholesterol numbers than those who eat plant-based or mixed diets, and more than 7 in 10 of them have cholesterol levels that doctors consider too high—especially if they’re eating super low-carb.

Eating very few carbs—like on a strict keto diet—can raise your 'bad' cholesterol, especially if you're replacing those carbs with lots of saturated fats like butter and red meat.

Eating a ketogenic diet (very low carb, high fat) makes the 'bad' cholesterol called LDL go up in adults by about 0.35 mmol/L on average, according to 27 research studies.