The present invention relates to fish protein hydrolysates for the use thereof in inducing weight loss and in limiting and/or inhibiting weight gain. The invention also relates to such hydrolysates in preventing and/or treating excessive weight and/or health problems linked to excessive weight. The protein hydrolysates according to the invention are obtained by the enzymatic hydrolysis of at least one protein source selected from among the group comprising the following fish: Micromesistius poutassou, Clupea harengus, Scomber scombrus, Sardina pilchardus, Trisopterus esmarki, Trachurus spp., Gadus morhua, Pollachius virens, Melanogrammus aeglefinus, Coryphaenoides rupestris, fish belonging to the order Siluriformes, said enzymatic hydrolysis being performed by an endopeptidase enzyme derived from Bacillus subtilis.
