Background: Overuse of smart devices provides comfort and problems both physically and mentally. The aim of this study was to assess the impact of smart phone and mobile devices on human health and life.Methods: This descriptive type of cross sectional study was conducted for three months in Dhaka city among general population aged 18 to 70 years. Four hundred and forty respondents were selected by non-probability convenient sampling technique. Data were collected by face to face interview with a semi-structured pre-tested questionnaire.Results: Among 440 respondents majority (76.6%) were below 25 years where 72.0% were students. A large proportion (90.5%) used smart phones for communication, 53.4% used for less than 5 hours daily. Majority (65.7%) had other electronic devices, most common 197 (68.1%) were laptop users where 118 (40.8%) used for studying. More than half 322 (73.2%) used earphones, 91 (20.7%) had ear problems and 223 (50.7%) lacked concentration. Many 299 (68.0%) had good relationship with family members, 208 (47.3%) stated that increased use of mobile devices hampered family life, 88 (42.3%) thought it reduced quality family time. Majority users 253 (57.5%) experienced physical discomfort after prolonged use and 95 (37.7%) suffered from headache. Association between age of respondents and time spent on smart devices was statistically significant (p<0.05). There was significant (p<0.05) association between ear problem and ear phone usage.Conclusions: Excessive use of smart phones should be avoided and social awareness increased through health programmes. Potential risks of cell phones and smart devices can be avoided by limiting the use.

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Background: Bedside teaching forms an integral part of medical education which is declining recently. The aim of this study is to evaluate the perception of undergraduate medical students about the attributes of bedside teaching.Methods: This cross-sectional study was carried out among the undergraduate medical students of Dr. Sirajul Islam Medical College, Dhaka, from September to November 2016. One hundred and forty medical students were included in this study. Ethical clearance had taken and a pre-designed and pre-tested questionnaire comprising of closed ended questions was used.Results: Majority of the study group, 64.3% absolutely agree that bedside teaching is a useful method for learning medical skills and 28.6% just agree. Regarding learning correct physical examination, mostly 41.4% absolutely agree that it is helpful and 37.1% only agree. It helps in rapid improvement of medical skills within limited time as absolutely agreed and just agreed by 48.6% and 45.7%, respectively. Half (50%) absolutely agree, 40% only agree that problem-based learning is possible, while evidence-based medicine can also be learned as 51.4% participants absolutely agree than 38.6% only agree. Majority 42.9% agree and 34.3% absolutely agree that allotted time is inadequate. More than half 54.3% and 40% absolutely agree and just agree, respectively, that maximum medical knowledge can be achieved by means of bedside teaching.Conclusions: Positive opinion about bedside teaching exists among the future doctors. But unfortunately they are deprived due to time limitation. The barrier must be removed to restore this imperative element of medical education.