After reading Chapter 2, in your opinion, what is the most influential factor on longevity? How can this information be used to help extend longevity? Support your explanations.

please cite information if available from 2 peer-reviewed journals and

Aldwin, C., Igarashi, H., Gilmer, D., & Levenson, M. R. (2017). Health, Illness, and Optimal Aging, Third Edition: Biological and Psychosocial Perspectives. (3rd ed.). New York, NY: Springer Publishing Company. ISBN-13:9780826134042.