The highlight of this article is the Randomized controlled trial: https://pubmed.ncbi.nlm.nih.gov/31105044/ https://pubmed.ncbi.nlm.nih.gov/31105044/ So yes,

The highlight of this article is the Randomized controlled trial: https://pubmed.ncbi.nlm.nih.gov/31105044/ https://pubmed.ncbi.nlm.nih.gov/31105044/ So yes, causal for obesity.