| Harmful effects | Frequency | Percent |
| Lung cancer | 293 | 79.4 |
| Other cancers | 32 | 8.7 |
| Cardiovascular diseases | 13 | 3.5 |
| Respiratory diseases | 8 | 2.2 |
| Ectopic pregnancy | 7 | 1.9 |
| Addiction | 5 | 1.4 |
| Infertility | 5 | 1.4 |
| Diabetes | 4 | 1.0 |
| Others | 2 | 0.5 |