NPPB and hydrops fetalis: Fitó et al. [54] found that the consumption of this pattern, with the addition of virgin olive oil or walnuts, decreased the cerebral natriuretic peptide-BNP, an important marker of the prognosis of patients with HF, (p < 0.05) and oxidized LDL (mainly in the olive oil group, p = 0.004) compared to the control group.