Hello, I Have A Young Friend (23 Yrs) Who Says

Hello,
I have a young friend (23 yrs) who says her room contains a mold problem. Her family is constantly ill: colds, headaches, fatigue. It is her bedroom that has the mold problem. She also is gluten sensitive, has shoulder problems, and for such a young woman has more medical issues than would seem normal for her age.
Is it possible that the mold could be the cause? Have been trying to look up definitive answers online, but am wondering if I should suggest she mention this to her health care provider as I don't believe it has occurred to her the mold could be causing the family's health issues.