In response to these trends, this study examined the relationship between nutrients and sleep using data from people who simultaneously used the dietary management application "ASKEN" (Asken, Inc.) and the sleep game application "Pokémon Sleep" (Pokémon, Inc.). The analysis utilized 14 nutrients quantified from daily diet records in ASKEN and the total sleep time, sleep latency, and wakefulness after sleep onset obtained from the three-axis accelerometer data built into smartphones in Pokémon Sleep. Data from 4,825 users, who gave their consent, were analyzed considering the interdependence of the major nutrients. The results showed that (1) the higher the total energy, the shorter the total sleep time and the longer the wakefulness after sleep onset, (2) participants with high protein intake had longer total sleep time, (3) participants with high intake of monounsaturated fatty acid and polyunsaturated fatty acids and (4) those with high intake of polyunsaturated fatty acids have shorter sleep latency and wakefulness after sleep onset, whereas those with high intake of monounsaturated fatty acids have longer sleep latency and wakefulness after sleep onset, (5) participants with high dietary fiber intake have longer total sleep time and shorter sleep latency and wakefulness after sleep onset, and (6) participants with high sodium intake (high sodium-to-potassium ratio) had shorter total sleep time and longer sleep latency and wakefulness after sleep onset.
This work was supported by the World Premier International Research Center Initiative (WPI) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) to M.Y.; Japan Agency for Medical Research and Development (AMED) JP21zf0127005 to M.I. and M.Y.; and the COI STREAM initiative launched in 2013 by MEXT, as well as the COI-NEXT initiative launched in 2020 by MEXT JPMJPF2017 to J.S.
Seol J, Iwagami M, Kayamare MCT, Yanagisawa M.
Relationship Among Macronutrients, Dietary Components, and Objective Sleep Variables Measured by Smartphone Apps: Real-World Cross-Sectional Study.
J Med Internet Res, 2025. doi: 10.2196/64749