I know it sounds crazy but i was thinking of it so posted it. My family have never had a fissure and they are extremely big eaters like myself and we have big bum cheeks. My mom suffered from hemmi and no fissures. Does big bums protect the anal area. I know i got mine from my stupid fingernail. My partner had a hemmi last week so i checked and she just had to bend over and i cansee everything, she had small bum cheeks. Me i bend over and you see a just alittle, i have to open my cheeks.

i'm not sure about size of butt, but i'm rather sure that weight does affect the fissures more. This is because heavy weight increases the anal pressure, as such, heavy people usually have hemms. I read from articles on the internet that one of the remedies for hemms is to reduce weight.

A good link at the Cleveland Clinic, one of the top hospitals in the USA for GI problems:
http://my.clevelandclinic.org/disorders/gastrointestinal_tract_disorders/hic_gastrointestinal_disorders.aspx