A cross-sectional study on the use of big data for the past H1N1 influenza epidemic in obesity after COVID-19: Focused on the body slimming cream and leptin via DTC gene test

J Cosmet Dermatol. 2022 Nov;21(11):5321-5335. doi: 10.1111/jocd.14585. Epub 2022 Sep 26.


Background: Based on the big data of 2010, 2011, and 2012, when H1N1 influenza was prevalent around the world in the past, this study investigated the obesity rate, weight change, and dietary methods of Korean dieters based on the historical situation of the past H1N1 influenza epidemic in Republic of Korea. This is intended to be the data for utilizing the prognostic evaluation of coronavirus disease-19 (COVID-19).

Objective: After COVID-19, research on obesity should be conducted systematically, and to prevent obesity, nutrition education, customized inner beauty & cosmetics, and the development of body slimming cream and leptin for proper diet should be done at the national level. This study was conducted to investigate the relationship between methods of weight control, generation, and gender, which have not yet been evaluated in the Korean adult population.

Methods: The cross-sectional study was comprised of 25 534 Korean who participated in the Fifth Korean National Health and Nutrition Examination Survey (KNHNES) conducted in 2010, 2011, and 2012.

Results: A 17 876 of the 19 375 respondents 20 years of age or older in the KNHNES answered about diet method. Two thousand and fifty-seven (15.63%) men and 4134 (25.77%) women thought of themselves as fat. However, 11 973 people (66.96%) did not change weight in the past year, 2536 people (14.19%) had increase in weight, and 3.164 (17.70%) reduced weight. A total of 7176 people (48.11%) indicated that they attempted to reduce weight through exercising, while 5553 people (37.23%) did so through reduced food intake.

Conclusions: This study was based on big data at the time of the H1N1 influenza epidemic in Korean population. The results of the present study will be helpful in the development of the body slimming cream and leptin via direct to consumer (DTC) gene test (GT) due to the rapid increase in obesity due to COVID-19 pandemic.

Keywords: COVID-19; DTC GT; H1N1 influenza epidemic; body slimming cream; leptin.

MeSH terms

  • Adult
  • Big Data
  • COVID-19* / epidemiology
  • Cross-Sectional Studies
  • Female
  • Humans
  • Influenza A Virus, H1N1 Subtype
  • Influenza, Human* / epidemiology
  • Leptin
  • Male
  • Nutrition Surveys
  • Obesity* / epidemiology
  • Republic of Korea / epidemiology


  • Leptin