Sandra Alters holds a PhD degree in Science Education and a Master's degree in biology. Formerly of the University of Missouri–St. Louis and Salem State College (Massachusetts), Dr. Alters has authored several textbooks in addition to Essential Concepts for Healthy Living, a laboratory manual, a children’s science book, many articles in professional literature, and over sixty chapters and features in books. Additionally, she has written the instructional design for a variety of science-related software products for students. With twenty-five years of teaching experience, Dr. Alters brings her educational expertise, background in biology and human biology, and extensive writing experience to the author team.

Wendy Schiff holds a Master's degree in Human Nutrition. She is a former Adjunct Instructor in the Department of Physical Education at the St. Louis Community College-Meramec Campus. Ms. Schiff has authored a college health textbook, two health education manuals, a low-calorie cookbook, and published articles in professional journals. She has served as a consulting nutritionist, reviewer of health education and nutrition materials, and a freelance health essayist. With her educational background in health and her experience teaching college health, nutrition, and sexuality classes, Ms. Schiff complements Dr. Alters’ expertise in biological sciences and science education.

1. Health: the foundation for life

2. Psychological health

3. Stress and its management

4. Violence and abuse

5. Relationships and sexuality

6. Reproductive health

7. Drug use and abuse

8. Alcohol and tobacco

9. Nutrition

10. Body weight and its management

11. Physical fitness

12. Cardiovascular health

13. Cancer

14. Infection, immunity, and noninfectious disease

15. Aging, dying, and death

16. Environmental health