INS and hydrops fetalis: The high production of SCFAs is associated with an increase in biodiversity, especially Bacteroides, Lactobacillus, Bifidobacterium, and Ruminococcus and a decrease in Bacillota and Pseudomonadota, all of which have a positive impact on human health and gut homeostasis by decreasing gut leakiness, enhancing immune function, improving insulin sensitivity, and thereby reducing inflammation, diabetes mellitus, and LDL, which are all recognized as risk factors for HF [83].