iceberg lettuce

Hello my name is Jess and my piggy’s name is Daisy. I love Daisy so much! I adopted her for my two older children aged 11 & 9 but they ended up not paying any attention to her as they are children so I became her owner and I fell in love. I spend so much on all the treats at my local pet shop...

Hey everyone I recently took over my friends guinea pigs. Two women. When i went to pick them up my friend gave me a package of lettuce she said she fed them every day. It was ice berg lettuce! Appearently they have been eating that for half a year, I’m very worried! What can happen to them now?