Abstract: A method for preventing and/or treating vitamin B12 deficiency is taught. The method comprises administering a composition comprising pseudovitamin B12-producing bacteria, optionally in conjunction with mucin-degrading and/or propionate-producing bacteria, to a subject in need thereof. The method is particularly suitable for administration to subjects suffering from vitamin B12 deficiency due to metformin treatment for type-2 diabetes, and to subjects having undergone bariatric surgery.

Abstract: A method for culturing and preserving the probiotic gut microorganism Eubacterium hallii is disclosed. The method provides an E. hallii preparation that is suitable for administration or ingestion to humans and that provides high E. hallii biomass yields. Preferably, the medium used for culturing E. hallii to high biomass yields comprises food grade components only, is free of any animal sources, and/or is kosher. Further, including a method of treating disease using the E. hallii preparation.

Abstract: Described is the use of Eubacterium hallii et rel. and/or Alcaligenes faecalis et rel., as well as pharmaceutical, food, or feed compositions comprising these bacteria as a medicament, in particular, for preventing and/or treating insulin resistance and/or insulin resistance-related complications such as metabolic syndrome, dyslipidemia and type 2 diabetes mellitus, as well as insulin resistance in endocrine diseases (e.g., obese subjects with type 1 diabetes mellitus, Cushing's disease and lipodystrophy syndromes. Also described is a method for preventing and/or treating insulin resistance and/or insulin resistance-related complications such as dyslipidemia and type 2 diabetes mellitus as well as insulin resistance in endocrine diseases (e.g., obese subjects with type 1 diabetes mellitus, Cushing's disease and lipodystrophy syndromes) in a subject in need thereof, the method comprising the step of increasing the level of Eubacterium hallii et rel. and/or Alcaligenes faecalis et rel. in the small intestine.

Abstract: Described is the use of Eubacterium hallii et rel. and/or Alcaligenes faecalis et rel., as well as pharmaceutical, food, or feed compositions comprising these bacteria as a medicament, in particular, for preventing and/or treating insulin resistance and/or insulin resistance-related complications such as metabolic syndrome, dyslipidemia and type 2 diabetes mellitus, as well as insulin resistance in endocrine diseases (e.g., obese subjects with type 1 diabetes mellitus, Cushing's disease and lipodystrophy syndromes. Also described is a method for preventing and/or treating insulin resistance and/or insulin resistance-related complications such as dyslipidemia and type 2 diabetes mellitus as well as insulin resistance in endocrine diseases (e.g., obese subjects with type 1 diabetes mellitus, Cushing's disease and lipodystrophy syndromes) in a subject in need thereof, the method comprising the step of increasing the level of Eubacterium hallii et rel. and/or Alcaligenes faecalis et rel. in the small intestine.

Abstract: Described is the use of Eubacterium hallii et rel. and/or Alcaligenes faecalis et rel., as well as pharmaceutical, food, or feed compositions comprising these bacteria as a medicament, in particular, for preventing and/or treating insulin resistance and/or insulin resistance-related complications such as metabolic syndrome, dyslipidemia and type 2 diabetes mellitus, as well as insulin resistance in endocrine diseases (e.g., obese subjects with type 1 diabetes mellitus, Cushing's disease and lipodystrophy syndromes. Also described is a method for preventing and/or treating insulin resistance and/or insulin resistance-related complications such as dyslipidemia and type 2 diabetes mellitus as well as insulin resistance in endocrine diseases (e.g., obese subjects with type 1 diabetes mellitus, Cushing's disease and lipodystrophy syndromes) in a subject in need thereof, the method comprising the step of increasing the level of Eubacterium hallii et rel. and/or Alcaligenes faecalis et rel. in the small intestine.