"5 S ection 7.7 Animal - to - human transmission of pathogens ................................ ................................ ...... 136 Section 7.8 Immune Defenses Against Infectious Diseases ................................ ................................ .... 138 Section 7.9 Risk Factors and Levels of Disease Prevention ................................ ................................ .... 147 Section 7.10 Levels of Disease Prevention ................................ ................................ ................................ .... 148 Section 7.1 1 Sexually Transmitted Infections ................................ ................................ .............................. 149 Section 7.12 STD/STI Treatments ................................ ................................ ................................ ..................... 155 Section 7.13 STD/STI Prevention: How to Prevent STI’s ................................ ................................ ........ 157 Section 8.1 Understanding Drug Use and Addiction ................................ ................................ ................. 161 Secti on 8.2 Types of Drugs ................................ ................................ ................................ ................................ ... 161 Section 8.3 Prescription Drugs ................................ ................................ ................................ ........................... 172 Section 8.4 Alcohol Abuse ................................ ................................ ................................ ................................ ..... 176 Section 8.5 Tobacco ................................ ................................ ................................ ................................ ................. 181 Section 8.7 Drug Addiction ................................ ................................ ................................ ................................ ... 186 Section 8. 7 Treatment Approaches for Drug Addiction ................................ ................................ .......... 189 CHAPTER 9: Basic Nutrition and Healthy Eating ................................ ................................ .............. 196 Section 9.1 Nutrition and Health ................................ ................................ ................................ ....................... 196 Section 9.2 Planning a Diet ................................ ................................ ................................ ................................ ... 208 Section 9.3 Popular Diets ................................ ................................ ................................ ................................ ...... 217 Section 9.4 Food Supplements and Food Replacements ................................ ................................ ......... 222 CHAPTER 10: Weight Management ................................ ................................ ................................ ....... 227 Section 10.1 Assessing Body Weight and Body Composition ................................ ................................ 230 Section 10.2 Factors Contributing to Overweight and Obesity ................................ ............................. 233 Section 10.3 Balancing Calories and Eating Healthfully ................................ ................................ .......... 239 Section 10.4 Body Image ................................ ................................ ................................ ................................ ....... 246 CHAPTER 11: Physical Fitness ................................ ................................ ................................ ................. 251 Section 11.1 Health Benefits Associated with Regular Physical Activity ................................ .......... 251 Section 11.2 Health Related Components of Physical Fitness ................................ ............................... 253 Section 11.3 Adding Physical Activity to Your Life ................................ ................................ .................... 256 Section 11.4 Implementing Your Fitness Plan ................................ ................................ ............................. 262 CHAPTER 12: Cardiovascular Disease, Diabetes, and Cancer ................................ ...................... 271 Section 12.1 Stroke ................................ ................................ ................................ ................................ .................. 277 Section 12.2 Metabolic Syndrome ................................ ................................ ................................ ..................... 279 Section 12.3 Diabetes ................................ ................................ ................................ ................................ ............. 287 Section 12.4 Cancer ................................ ................................ ................................ ................................ ................. 292 CHAPTER 13: Environmental Health ................................ ................................ ................................ .... 305 Section 13.1 Overpopulation ................................ ................................ ................................ ............................... 306 Section 13.2 Air Pollution ................................ ................................ ................................ ................................ ..... 307 Section 13.3 Climate Change ................................ ................................ ................................ ............................... 308 Section 13.4 Water ................................ ................................ ................................ ................................ .................. 3 09 Section"