Health Diseases 110 Nutrition 96 Medicine 81 Medicine  70 Popular Science in Medicine and Health 70 Physical fitness 60 more ... Horses 43 Exercise 42 Dogs 41 Cats 36 Public health 35 Food 30 Research 28 Health and hygiene 27 Religious aspects 25 Islam 23 Social medicine 22 Health education 21 Diet 19 Hygiene 19 Alternative treatment 18 Handbooks, manuals, etc 18 Health aspects 17 Health behavior 17 Periodicals 17 Sociology 17 methods 17 Behavior 16 Congresses 16 less ...