The GUT Foundation
Wind Flatulance
Wind Flatulance
Between 500 and 1500 mL of flatus is produced every 24 hours. There are no reports of significant differences in the volumes generated by men and women. However, men report more emissions than women (12 times a day for men and 7 times a day for women; with a range for both sexes of between 2 and 30).
The number of emissions depends on the fibre content of the diet, with higher fibre levels generatin more flatus. The usual emission volume is 90 mL.
There is little relationship between the number of times a person passes flatus and the total volume, suggesting that the size of emissions varies among individuals because of different sensitivities to gaseous distension of the rectum.