Acknowledgments & Disclaimer Author: Diana Bocco

Photo Credits in order of appearance: Royalty-Free/Corbis, D. Hurst/Alamy.

This chart and the information contained in this chart are for general educational and informational uses only. Nothing contained on this chart should be construed or intended to be used for medical diagnosis or treatment. Users are encouraged to confirm the information contained herein with other sources and review the information carefully with their physicians or qualified healthcare providers. The information is not intended to replace medical advice offered by physicians or healthcare providers. Should you have any healthcare-related questions, please call or see your physician or other qualified healthcare provider promptly. Always consult with your physician or other qualified healthcare provider before embarking on a new treatment, diet, or fitness program. The publishers will not be liable for any direct, indirect, consequential, special, exemplary, or other damages arising therefrom.