Sumary of Menstrual cycle length and body temperature change with age and seasons:
- Average follicular phase body temperature showed no significant age dependent changes, but luteal phase body temperature gradually increased up to 29 years and then stabilized and started to decrease after age 42 years..
- In a new study, researchers from Tokyo Medical and Dental University (TMDU) have harnessed the ubiquity of smartphones to amass and analyze data that throws new light on age-related and seasonal variations of menstrual rhythms and body temperature in Japanese women..
- The menstrual cycle and basal body temperature are individually variable and as intimately linked with physical and mental wellness as it is to social and sexual behavior..
- “Using a smartphone healthcare app for women, we requested and collated menstruation parameters in terms of duration and periodicity as well as body temperature and its variation with age, menstrual phase and seasonal indices including environmental temperature, sunshine hours and precipitation.”.
- Thanks to the advantages of anonymity and convenience of self-reporting, there was a massive response from about 310,000 Japanese women covering 6 million menstrual cycles, which required innovative Big Data analytical tools to crunch..
- The research team found that the average menstrual cycle gradually lengthened from adolescence until the age of 23 years (average 30.7 days)…