i'm asking this because i'm having clots in my period again. the last time that happened was in february when i was taking vitamin c for a cold. this time i was taking vitamin c see again for the first time since that february in order to help with iron supplement absorption. so i'm fairly certain the vitamin c is causing the clots, although i don't know by what mechanism. i know another woman discovered that magnesium supplements were causing her digestive issues after a process of elimination.
fish oil caused my daughter's periods to be heavier.
in general a woman's menstrual cycle can be a sensitive indicator to the effect of changes in diet, supplementation, exercise etc.
quality of sleep and digestion are too.