Beauty From Within: When You Eat Can Change How Your Body Metabolizes and Absorbs Food

If you care about beauty from within and pay attention to what you eat, there’s another important question to consider: when you eat. Nutrition has traditionally focused on what we eat and how we eat. But research is revealing another important piece of the puzzle: meal timing. Even when we eat the same food, the time of day can affect how our bodies absorb and metabolize it. One of the keys is our circadian clock. In this video, I’ll explain the relationship between meal timing and the body through chrono-nutrition, an emerging field of nutrition science, and BMAL1, one of the genes involved in regulating our circadian rhythms. You’ll learn: When during the day your body may be more or less likely to store fat Why the same meal can be metabolized differently depending on when you eat it A practical split-dinner strategy for days when you have to eat late How to work with your circadian clock and enjoy food without unnecessary restriction The goal isn’t simply to avoid the foods you love. It’s to understand how your body works—and use when you eat as another tool for beauty and health from within. Our bodies evolved around a natural rhythm: being active during the day and resting at night. In this video, we’ll also look at how that rhythm developed and how the science of chrono-nutrition can be applied to everyday life. The Nana Method is a beauty approach based on circadian rhythms, chrono-nutrition, and skin science. It focuses not only on what you do for beauty, but also on when you do it—so you can make your daily habits work more efficiently with your body. 【References】 1）大塚邦明（2012）『体内時計の謎に迫る』技術評論社. 2）明石真（2013）『体内時計のふしぎ』光文社新書. 3）産業技術総合研究所（2007）『きちんとわかる時計遺伝子』白日社. 4）Cox KH, Takahashi JS（2019）“Circadian Clock Genes and the Transcriptional Architecture of the Clock Mechanism.” Journal of Molecular Endocrinology. 63(4):R93-R102. doi:10.1530/JME-19-0153. 5）Shimba S, Ishii N, Ohta Y, Ohno T, Watabe Y, Hayashi M, Wada T, Aoyagi T, Tezuka M（2005）“Brain and muscle Arnt-like protein-1 (BMAL1), a component of the molecular clock, regulates adipogenesis.” Proceedings of the National Academy of Sciences of the United States of America. 102(34):12071-12076. doi:10.1073/pnas.0502383102. 6）榛葉繁紀（監修）（2010）『太らない時間に食べる！体内時計ダイエット』マガジンハウス. 7）医歯薬出版（編）（2025）『日本食品成分表2025 八訂―文部科学省 日本食品標準成分表（八訂）増補2023年準拠―』医歯薬出版. 8）厚生労働省（n.d.）「お菓子や間食の取り入れ方」e-ヘルスネット（アクセス日：2026年6月26日）. 9）Gu C, Brereton N, Schweitzer A, Cotter M, Duan D, Børsheim E, Wolfe RR, Pham LV, Polotsky VY, Jun JC（2020）“Metabolic Effects of Late Dinner in Healthy Volunteers—A Randomized Crossover Clinical Trial.” The Journal of Clinical Endocrinology & Metabolism. 105(8):2789-2802. doi:10.1210/clinem/dgaa354. 10）Kajiyama S, Imai S, Hashimoto Y, Yamane C, Miyawaki T, Matsumoto S, Ozasa N, Tanaka M, Kajiyama S, Fukui M（2018）“Divided consumption of late-night-dinner improves glucose excursions in young healthy women: A randomized cross-over clinical trial.” Diabetes Research and Clinical Practice. 136:78-84. doi:10.1016/j.diabres.2017.11.033. 11）Kuroda H, Tahara Y, Saito K, et al.（2012）“Meal frequency patterns determine the phase of mouse peripheral circadian clocks.” Scientific Reports. 2:711. 12）柴田重信，小田裕昭，加藤秀夫，堀江修一，榛葉繁紀，香川靖雄（2009）『時間栄養学』女子栄養大学出版部. 13）柴田重信（2023）「時間栄養学の基礎から実践へ」『日本臨床栄養学会雑誌』45(1):7-21.