Women/girls often spend more time in toilet rooms than men/boys, both for physiological and cultural reasons. The requirement to use a cubicle rather than a urinal means that urination takes longer and sanitation is a far greater issue, often requiring more thorough hand washing. Females also make more visits to toilets. Urinary tract infections and incontinence are more common in females. Pregnancy, menstruation, breastfeeding, and diaper-changing increase usage. The elderly, who are disproportionately female, due to men dying earlier in their old age than females, make longer and more frequent toilet visits. Unisex public toilets can alleviate this problem by providing equal sanitation space for all genders, eliminating the prospect of unused cubicles in the male toilets.