Materials and methods of treating a patient with type 2 diabetes mellitus, metabolic syndrome, obesity, infertility, high blood pressure, hyperthyroidism, and hypothyroidism, hyperlipidaemia, osteoporosis, osteoarthritis, hypoadrenalism, polycystic ovary syndrome, or Parkinson's disease comprising administering a therapeutically effective amount of ex vivo cultured activated peripheral blood mononuclear cells (PBMCs) to the patient. The ex vivo cultured activated cells are activated and cultured in a presence of a cytokine and may be autologous or allogeneic relative to the patient.