According to a survey conducted in Japan in December 2023, around *** percent of men were estimated to have used caffeine tablets within the past month. The share for women was much lower.
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National Center of Neurology and Psychiatry. (July 2, 2024). Estimated use of caffeine tablets in the past month in Japan as of December 2023, by gender [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 30, 2026, from /statistics/1557384/japan-estimated-use-caffeine-tablets-past-month-by-gender/
National Center of Neurology and Psychiatry. "Estimated use of caffeine tablets in the past month in Japan as of December 2023, by gender." Chart. July 2, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 30, 2026. /statistics/1557384/japan-estimated-use-caffeine-tablets-past-month-by-gender/
National Center of Neurology and Psychiatry. (2024). Estimated use of caffeine tablets in the past month in Japan as of December 2023, by gender. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 30, 2026. /statistics/1557384/japan-estimated-use-caffeine-tablets-past-month-by-gender/
National Center of Neurology and Psychiatry. "Estimated Use of Caffeine Tablets in The past Month in Japan as of December 2023, by Gender." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 2 Jul 2024, /statistics/1557384/japan-estimated-use-caffeine-tablets-past-month-by-gender/
National Center of Neurology and Psychiatry, Estimated use of caffeine tablets in the past month in Japan as of December 2023, by gender ÌÇÐÄÆƽâ°æ, /statistics/1557384/japan-estimated-use-caffeine-tablets-past-month-by-gender/ (last visited July 30, 2026)
Estimated use of caffeine tablets in the past month in Japan as of December 2023, by gender [Graph], National Center of Neurology and Psychiatry, July 2, 2024. [Online]. Available: /statistics/1557384/japan-estimated-use-caffeine-tablets-past-month-by-gender/
