Increased Intestinal IgA Levels
| Supplement | Research Paper | Effect Type | Effect Size |
|---|---|---|---|
| Lactobacillus delbrueckii | 10.3920/bm2019.0198 | Beneficial | Moderate |
| Lacticaseibacillus casei | 10.1007/s12602-021-09864-7 | Beneficial | Moderate |
| Lactobacillus kefir | 10.3389/fmicb.2018.02856 | Beneficial | Small |