background: india has a high burden of tobacco usage and its related morbidity and mortality. almost 30% of the indian population above 15 years of age use some form of tobacco. men usually use smoked tobacco, while women are more likely to use smokeless (chewed) tobacco. tobacco usage has been identified as a risk factor for non-communicable diseases (ncds) among slum dwellers in urban cities....

background: numerous studies have assessed risk factors for multiple sclerosis (ms), but regarded to paradoxical results & specific ethnical- cultural circumstances in ahvaz, as a city in iran, this case-control study was aimed to assess some factors related to lifestyle (consumption & exposure with cigarette smoking, duration & surface of sun light exposure, exposure to pets and farm animals) ...