Hey Nigel, hope you're doing well. If health is a passion of yours, there is some good work by the PhD Physicist Ray Peat. There's a deep rabbit hole, especially once you get into the topic of fats. Mono, Poly and Saturated do not behave equally in the body; some are estrogenic, some cause disease; some displace others, etc. PS: thank you for the book tip the other year, it helped me settle an issue I was facing after reading Ayn Rand's Atlas Shrugged.