Cholesterol
Multiple realities
(covers information from several alternate timelines)
Cholesterol was a compound found in the body tissues of humanoids.
In an alternate timeline experienced by Emperor Philippa Georgiou via the Guardian of Forever, Michael Burnham heard that the kitchen aboard the ISS Discovery had stopped serving Kelpien in their dishes. The emperor gave an explanation for the decision by saying Kelpien flesh had a high level of cholesterol and a stringy texture. (DIS: "Terra Firma, Part 2")