Investigative research results report on gum chewing habits and hair thickness. We are pleased to inform you that our paper has been published in "Anti-Aging Medicine - Japanese Society of Anti-Aging Medicine (Vol. 17, No. 2, 2021)".

Lotte Co., Ltd. Lotte Co., Ltd. (Representative Director and President: Eiichi Gotsu) focuses on the health functions of chewing and is engaged in various research. This time, Lotte Co., Ltd. conducted an observational study on gum chewing habits and hair diameter, and the results of this research were published in "Anti-Aging Medicine-Japanese Society of Anti-Aging Medicine (Volume 17, No. 2, 2021)". I will let you know. In this study, 27 Lotte Central Research Institute employees who were not aware of hair-related symptoms were divided into a group who chewed gum a lot and a group who chewed gum less in their daily lives (weekdays), and the hair diameter was compared. However, it was found that the parietal hair was significantly thicker in the group that chewed gum longer. This study is merely a research study on gum chewing habits and hair diameter, and does not prove a causal relationship between gum chewing habits and hair thickness. Based on the results of this study, in the future, while listening to the opinions of experts, we will evaluate the effects of mastication on scalp blood flow and the effects of long-term gum mastication intervention research on hair diameter. We will continue to conduct research on the possibility of giving ■Summary of Research We investigated the possibility that gum chewing habits (how long you usually chew gum) are related to the thickness of the hair on your head. [Subjects] 27 researchers at Lotte Central Research Institute (21 men, 6 women, 24-51 years old: average age 36.4 ± 8.7 years old) *Those with hair-related symptoms (including those with no hair), Those who use supplements or products for hair, who are pregnant, who have thin hair within the second degree of kinship, and who feel strong stress were excluded from the survey. [Method] 1) Gum chewing time questionnaire: Summarize the average chewing time of gum on a daily basis and divide into groups according to chewing time * Group with long gum chewing time: 14 people (11 men, 3 women, average 34.0) ± 5.9 years old) ... Average of 51.1 ± 13.0 minutes per day * Group with short gum chewing time: 13 people (10 men, 3 women, average of 38.9 ± 10.9 years old) ... Average of 10.0 ± 6.8 per day Section 2) Hair diameter evaluation: Cut off 10 hairs from the base of the parietal region (vertex connecting both ears) and temporal region (the point where the temporal muscle protrudes during mastication) with scissors. Take a picture with a microscope about 1 cm from the cut end and measure the thickness. ■ Research results The hair diameter on the parietal region was significantly thicker in the group who chewed gum a day more than in the group who chewed it less time. Medical Society (Volume 17, No. 2, 82-85, 2021) Title: Effect of gum chewing habits on hair -Observational study- Authors: Naoya Oshima, Nor Kanno, Kenji Osawa It has been reported that the flow rate increases 1) and the hair diameter increases by performing scalp massage for 24 weeks 2). It has also been reported that chewing gum increases cerebral blood flow and common carotid artery blood flow3)4). Based on the above, we hypothesized that gum chewing affects scalp blood flow, which in turn affects hair diameter, and investigated the relationship between gum chewing habits and parietal and temporal hair diameters. [Research method] ■ Subjects: 27 researchers at Lotte Central Research Institute (21 men, 6 women, 24-51 years old: average age 36.4 ± 8.7 years old) *Hair-related symptoms (including those without hair) Those who can recognize it, those who use supplements and products for hair, those who are pregnant, those who have thin hair within the second degree of kinship, and those who feel strong stress were excluded from the survey. Breakdown: Long average gum chewing time per day (average 51.1 ± 13.0 minutes) Group: 14 people (11 men, 3 females, average 34.0 ± 5.9 years old) Average gum chewing time per day is short (average 10.0 minutes) ± 6.8 minutes) Group: 13 people (10 men, 3 women, average age 38.9 ± 10.9 years) Contents: 10 hairs on the parietal and temporal regions of each group were cut off near the hair roots and examined with a microscope (EV- 80Z, GOKO), the hair was photographed about 1 cm from the cut end, the thickness was measured, and the average values ​​were compared. [Results and discussion] When comparing the hair diameters on the parietal and temporal regions of the group that chewed gum a lot and the group that chewed it less a day, the hair diameter on the parietal region was significantly higher in the group that chewed gum longer. It was found to be thick, suggesting a relationship between gum chewing habits and hair diameter. References 1) Hajime Soga, Koji Morita, Kenji Arai. Effect of skin massage on the scalp. J Soc Cosmet Chem Jpn. 2014；48：97-1032) Koyama T, Kobayashi K, Hama T, et al. Results in Increased Hair Thickness by Inducing Stretching Forces to Dermal Papilla Cells in the Subcutaneous Tissue. Eplasty.2016;16:e8.3) Momose T, Nishikawa J, Watanabe T, et al. Effect of mastication on regional cerebral blood flow in humans Examined by positron-emission tomography with 15O-labelled water and magnetic resonance imaging. Arch Oral Biol. 1997；42：57-61.4) Suzuki M, Ishiyama Ikuro, Takiguchi T, et al. Effect of Gum Firmness on Volume, Heart Rate and Blood Pressure Response. Journal of Japan Society of Chewing and Chewing. 1994; 4: 51-62. Lotte Co., Ltd. https://www.lotte.co.jp/

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