Abstract: 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 Lactobacillus casei F19 (LMG P-17806), Lactobacillus acidophilus NCFB 1748 or Bifidobacterium lactis Bb12.

Abstract: Strain of Lactobacillus useful as probiotics in food and naturopathic medicines and which is resistant in vitro against hydrochloric acid and gastric juices and tolerates bile salts without deconjugating them whereas strong assimilation is occurring and which has good survival at the passage through the stomach and the gastrointestinal tract and which strain is growing optimally at about 37° C., which strain is Lactobacillus paracasei subsp. paracasei, which is a Gram-positive, homofermentative, rod-shaped bacterium capable of producing L-lactic acid and containing three plasmids having a size of 2.2, 4.36 and 9.1 Kb, respectively. The invention also relates to a composition containing the strain and a product consisting of or containing a concentrate of the strain.