Table 1 Inclusion and exclusion criteria according to time of inclusion
| Before surgery (T1) | After surgery (T2-T5) | Pregnancy (T6) | Breast milk composition | |
|---|---|---|---|---|
| Inclusion criteria |
*women aged 18–45 *approved for bariatric surgery (all types of surgery) *internet connection and email |
*women aged 18–45 *previous bariatric surgery (all types of surgery) *internet connection and email |
*women aged 18–45 *previous bariatric surgery (all types of surgery) * < 15 weeks of gestation *internet connection and email |
*women aged 18–45 *lactating women with previous bariatric surgery *pregnancy duration between 37 and 41 weeks |
| Exclusion criteria | *infertility (e.g. menopause, hysterectomy) | *infertility (e.g. menopause, hysterectomy) | / |
*use of medication possibly affecting breast milk (discussed individually with neonatologist) *problems or difficulties with breastfeeding * > 10 % weight loss in newborn 4 days after delivery *diabetes or GDM |