Health aspects Environmental aspects 289 Social aspects 229 History 173 Health and hygiene 156 Pollution 146 Toxicology 140 mere ... Public health 138 Medical care 127 Prevention 114 Equality 102 Environmental health 98 Health risk assessment 96 Diseases 83 Physiological effect 82 Safety measures 80 Research 79 Veterans 78 Medical policy 77 Smoking 76 Health 73 Health services accessibility 72 Economic aspects 70 Government policy 70 Nutrition 70 Psychological aspects 67 Climatic changes 65 Air 61 Exercise 59 Tobacco use 58 mindre ...