Number (%) of participants reporting medication during the HealthTrack study
| Medication type | Control | Intervention | Intervention + walnuts | p value* |
| Antihypertensive (n (%)) | ||||
| Baseline | 14 (11) | 20 (16) | 17 (14) | 0.521 |
| 3 months | 10 (10) | 16 (16) | 17 (17) | 0.410 |
| 6 months | 7 (10) | 10 (15) | 12 (14) | 0.654 |
| 9 months | 6 (10) | 8 (15) | 13 (17) | 0.491 |
| 12 months | 6 (10) | 9 (20) | 13 (18) | 0.267 |
| Hypoglycaemic/insulin (n (%)) | ||||
| Baseline | 6 (5) | 4 (3) | 5 (4) | 0.945 |
| 3 months | 6 (6) | 3 (3) | 5 (5) | 0.584 |
| 6 months | 2 (3) | 2 (3) | 4 (5) | 0.819 |
| 9 months | 1 (2) | 3 (6) | 3 (4) | 0.563 |
| 12 months | 1 (2) | 3 (7) | 3 (4) | 0.429 |
| Hypolipidaemic (n (%)) | ||||
| Baseline | 15 (12) | 10 (8) | 7 (6) | 0.201 |
| 3 months | 14 (15) | 8 (8) | 7 (7) | 0.147 |
| 6 months | 10 (14) | 6 (9) | 5 (6) | 0.190 |
| 9 months | 9 (15) | 6 (11) | 5 (7) | 0.287 |
| 12 months | 10 (16) | 5 (11) | 3 (4) | 0.064 |
↵*χ2 test