Consumers’ perceptions of dietary supplements before and after the COVID-19 pandemic based on big data / 한국영양학회지

Purpose@#This study identified words closely associated with the keyword “dietary supplement” (DS) using big data in Korean social media and investigated consumer perceptions and trends related to DSs before (2019) and after the coronavirus disease 2019 (COVID-19) pandemic (2021). @*Methods@#A total of 37,313 keywords were found for the 2019 period, and 35,336 keywords were found for the 2021 period using blogs and cafes on Daum and Naver. Results were derived by text mining, semantic networking, network visualization analysis, and sentiment analysis. @*Results@#The DS-related keywords that frequently appeared before and after COVID-19 were “recommend”, “vitamin”, “health”, “children”, “multiple”, and “lactobacillus”. “Calcium”, “lutein”, “skin”, and “immunity” also had high frequency-inverse document frequency (TF-IDF) values. These keywords imply a keen interest in DSs among Korean consumers. Big data results also reflected social phenomena related to DSs; for example, “baby” and “pregnant woman” had lower TD-IDF values after the pandemic, suggesting lower marriage and birth rates but higher values for “joint”, indicating reduced physical activity. A network centered on vitamins and health care was produced by semantic network analysis in 2019. In 2021, values were highest for deficiency and need, indicating that individuals were searching for DSs after the COVID-19 pandemic due to a lack an awareness of the need for adequate nutrient intake. Before the pandemic, DSs and vitamins were associated with healthcare and life cycle-related topics, such as pregnancy, but after the COVID-19 pandemic, consumer interests changed to disease prevention and treatment. @*Conclusion@#This study provides meaningful clues regarding consumer perceptions and trends related to DSs before and after the COVID-19 pandemic and fundamental data on the effect of the pandemic on consumer interest in dietary supplements.

An fMRI Study Regarding the 'Theory of Mind' in Korean Schizophrenic Patients Using a First Order False Belief Task / 신경정신의학

OBJECTIVES: The aim of this study was to investigate brain activation during a Korean language-based 'theory of mind (TOM)' task and fMRI in Korean schizophrenic patients. METHODS: Fourteen Korean schizophrenic patients and 15 normal controls participated in this study. For all participants, several clinical states and psychosocial functions were evaluated. The subjects were then scanned while performing Korean language-based fMRI tasks. The tasks were comprised of conditions-first order false belief (TOM task), physical causality, and unrelated situations. Imaging data were analyzed using SPM2 software (uncorrected p<0.005, extent threshold kappa=10). RESULTS: 1) Compared with the control group, the patient group showed significantly poorer performance on the TOM task, and no significant correlation between TOM and empathic abilitiesy. 2) In the patient group, there were no significantly activated brain regions associated with the TOM task as compared to the physical causality task. With respect to between-group differences, the patient group showed significantly less activation of the left medial frontal region (primarily BA 8) and signifcantly different activation of the left precuneus (BA 7) associated with the TOM task. CONCLUSION: These results suggest that Korean schizophreniac patients show different brain activity associated with TOM functions, especially with respect to the Korean language-based first order false belief tasks.

Clinical Manifestations of Post-stroke Sexual Lives

OBJECTIVE: To assess the impacts of stroke on sexual activities and functioning of patients with stroke and to study the associations of clinical and psychosocial factors with sexual changes following stroke. METHOD: Ninety-seven patients with stroke were interviewed and completed questionnaire concerning their prestroke and poststroke coital frequency, sexual satisfaction, and sexual functions such as erection, ejaculation, and vaginal lubrication. RESULTS: Sexual activities such as coital frequency and sexual satisfaction were decreased in patients after stroke. Sexual dysfunctions including impotence (68%), a decline in ejaculation (66.7%), and a decline in vaginal lubrication (89.5%) were high. Subjective reasons for decreased sexual life after stroke were denial of spouse, impotence, decreased libido, no opportunity of sexual activity due to hospitalization or no sexual partner, fear of relapse, physical discomfort due to hemiparesis and so on. Comparing sexual group with no sexual group after stroke, there were different in age (p=0.040), brain lesion site (p=0.036), prestroke coital frequency (p=0.048), erectile ability (p=0.005), and ejaculation (p<0.001). CONCLUSION: The decline in sexual activities and functioning was due to interpersonal, physical, psychological factors among patients following stroke.

Association between Quality of Life and Sexual Adjustment for Spinal Cord Injury Couples

OBJECTIVE: To examine the association between sexual adjustment and quality of life and to evaluate the difference of sexual adjustment between small group counselling program and simple sexual rehabilitation program for spinal cord injury couples. METHOD: Fifteen subjects who had participated in 4 weeks small group counselling and twenty subjects, who had participated in simple sexual rehabilitation education were enrolled among among spinal cord injury couples. Direct interview was conducted. Visual analogue scale, Time trade off, Hospital anxiety and depression, and Beck depression inventory were used as quality of life indexes. Sexual Interest, Activity and Satisfaction was used as a sexualadjustment measure. RESULTS: The sexual adjustment index was very significantly positively correlated with all 4 indexes of the quality of life. The couples of the small group counselling had significantly higher sexual adjustment index than the simple education group. Satisfaction for small group counselling was also higher. CONCLUSION: To improve the quality of life for spianl cord injury couples, sexual adjustment level must be improved. Systematic sexual rehabilitation program such as small group counselling may be better solution than simple sexual rehabilitation education program.