Energy balance
Dietary interventions significantly reduce long-term postpartum weight retention (6 months) but have no significant effect on short-term retention (6 weeks).
If you are trying to lose pregnancy weight, do not be discouraged if the scale doesn't move significantly in the first 6 weeks. Dietary interventions show clear benefits for weight retention at the 6-month mark. Consistency in healthy eating habits established during pregnancy pays off in the long run.
Dietary intervention significantly reduced... weight retention at six months postpartum (n = 443; WMD = -1.90 kg; 95% CI = -2.69/-1.12; p < 0.0001)... However, dietary intervention had no significant effect on weight retention at six weeks postpartum
Why this rating
Meta-analysis of 3-4 trials, significant heterogeneity (I2=63%) but strong p-value for 6-month retention.
Source
Systematic review of clinical trials on dietary interventions to prevent excessive weight gain during pregnancy among normal weight, overweight and obese women
Ida Tanentsapf et al. · BMC Pregnancy and Childbirth · 2011
DOI 10.1186/1471-2393-11-81
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