Pretty easy, overall.
I would 100% recommend this course with Dr. Engstrom. It has a reasonable amount of coursework. There are 4 exams total, but the entire course is online so it's very doable. There are also 4 assignments that require only answering questions from the textbook. Discussion boards are sporadic, with one each week or each other week. There is one 5 page research paper due in the middle of the semester, which seemed crazy at first, but you'll be grateful when there's one less paper to do at the very end.
Even if you don't read the entire textbook, you'll definitely learn something from doing the assignments. In addition, you'll also learn about one topic with the research paper. I learned quite a bit about food and nutrition in children in other countries with this paper.
Hours per week:
Advice for students:
With this course, I definitely recommend buying the ebook. It comes in handy during exams. In addition, you wouldn't need to carry around a book for the assignments. Some of the info you can also gather from common knowledge so this course is very doable.