| Adult Children (2 tracked articles) |
| Age Groups (9,069 tracked articles) |
| Athletes (179 tracked articles) |
| Caregivers (32 tracked articles) |
| Child of Impaired Parents (5 tracked articles) |
| Consultants (1 tracked article) |
| Crime Victims (37 tracked articles) |
| Criminals (14 tracked articles) |
| Drug Users (7 tracked articles) |
| Emigrants and Immigrants (6 tracked articles) |
| Famous Persons (9 tracked articles) |
| Friends (28 tracked articles) |
| Grandparents (3 tracked articles) |
| Health Disparate Minority and Vulnerable Populations (193 tracked articles) |
| Homebound Persons (1 tracked article) |
| Ill-Housed Persons (8 tracked articles) |
| Legal Guardians (1 tracked article) |
| Medically Uninsured (3 tracked articles) |
| Men (12 tracked articles) |
| Mentors (4 tracked articles) |
| Minors (1 tracked article) |
| Multiple Birth Offspring (32 tracked articles) |
| Non-Smokers (1 tracked article) |
| Occupational Groups (362 tracked articles) |
| Parents (109 tracked articles) |
| Patients (54 tracked articles) |
| Persons with Disabilities (36 tracked articles) |
| Population Groups (164 tracked articles) |
| Prisoners (7 tracked articles) |
| Refugees (2 tracked articles) |
| Research Subjects (112 tracked articles) |
| Sex Workers (1 tracked article) |
| Sexual Partners (95 tracked articles) |
| Siblings (15 tracked articles) |
| Single Person (3 tracked articles) |
| Smokers (4 tracked articles) |
| Spouses (23 tracked articles) |
| Students (244 tracked articles) |
| Survivors (46 tracked articles) |
| Terminally Ill (4 tracked articles) |
| Tissue Donors (17 tracked articles) |
| Transgender Persons (42 tracked articles) |
| Transients and Migrants (7 tracked articles) |
| Transplant Recipients (2 tracked articles) |
| Unvaccinated Persons (2 tracked articles) |
| Vegetarians (24 tracked articles) |
| Veterans (20 tracked articles) |
| Visitors to Patients (1 tracked article) |
| Volunteers (63 tracked articles) |
| Women (21 tracked articles) |