Answers are grounded in this paper and cite their sources.
The question posed by the review cannot be answered with any level of confidence. The data available show a poor effect of these interventions on nutritional status, but methodological weaknesses of the studies cast serious doubts on the validity of these results. More rigorous and better designed studies are needed, as well as the establishment of agreed quality standards to guide researchers in this important area.
No takes yet. Share an insight, caveat, or question.
Masset et al. (2012) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: