Use of probiotic bacteria for the manufacture of a food product, feed product, dietary supplement, nutritional product, natural remedy, pharmaceutical active formulation and medicinal product to be used for controlling weight gain, preventing obesity, increasing satiety, prolonging satiation, reducing food intake, reducing fat deposition, improving energy metabolism, enhancing insulin sensitivity, treating obesity and treating insulin insensitivity. The probiotic bacteria is at least one of F19 (LMG P-17806), NCFB 1748 ox Bb 12.