I was recently made aware of a course that looks very interesting: Real Food Nutrition and Health. The author is a homeschooling mom who subscribes to the Charlotte Mason method of teaching... using "real" books rather than boring pre-packaged textbooks for education. There is both a book and an e-course option.
Here is her recommended reading list. Some of the books I am quite familiar with, others I have not seen.
Here's an introductory video for you.
I think it would be great fun to cover this material with my children~ and vitally important for their future. Hope you find this resource helpful!