The team from Massachusetts University and Harvard University believe iron might be linked to PMT since it is involved with the production of the brain chemical serotonin, which helps regulate mood.
The term 'premenstrual tension', is used to cover a range of symptoms experienced by some women for up to two weeks before their monthly period. PMT is sometimes also called premenstrual syndrome (PMS). The symptoms of PMT and PMS can include mood swings, tiredness, night sweats.
Researchers found a link between high intake of non-heme iron and a lower chance of developing PMT.