PMT= (Sigas en Ingl?s de S?ndrome de tensi?n premestrual)
Eating lots of broccoli, sesame seeds and other plant foods rich in iron can help combat premenstrual tension (PMT) a study suggests.
US researchers found women who ate foods rich in what is called non-heme iron - found in plants and supplements - were less likely to report suffering from PMT.
Iron might be related to PMS because it is involved with the production of the brain chemical serotonin, which helps regulate mood, they said.
Their study looked at the health of about 3,000 nurses, who were followed for a decade.
At the start all said they did not have PMT. By the end of the 10-year period a third had been diagnosed with it and two-thirds had not.
When researchers at Massachusetts University and Harvard analysed their diets, they found a link between high intake of non-heme iron and a lower chance of developing PMT.
Specifically, those whose intake exceeded 20mg a day, were 30 to 40 per cent less likely than those with low intakes to suffer from PMT. The recommended daily amount (RDA) for women is 18mg.
They also found ?some indication? that high zinc intake was associated with lower risk of PMT.
The study, published in the American Journal of Epidemiology on Tuesday, is the first to find a link between iron and PMT, and the authors noted that it did not prove that an iron-rich diet would help prevent PMT.
Elizabeth Bertone-Johnson, associate professor of public health, said: ?Our findings need to be replicated in other studies. However, women at risk for PMS should make sure they are meeting the RDA for non-heme iron and zinc."
Plant foods rich in iron include broccoli, which has 1mg per 100g. However, toasted sesame seeds (14.8mg per 100g) and dried apricots (6.3mg per 100g) have much more.