Jay-Z expresses concern over Rihanna's health

American rapper Jay-Z, who is the mentor of Pop singer Rihanna, has suggested her to take some time off from her work. She is working too hard. Recently, she was down with bronchitis and laryngitis. Even then she performed at the Grammy and BRIT Awards. Seeing her hectic schedule, he has become concerned about her health.

Currently, Rihanna has been working hard promoting her album 'Loud". "Rihanna's professional, works hard and stays away from drugs and alcohol, but Jay wants her to be careful," Look quotes a source as saying. "He told her to take a holiday for a week - she's been working flat out and needs to get over the bronchitis, which he's sure she's developed as a result of stress. He told her she'll be alright, but to keep her head down," added the source.

However, Jay-Z signed her to Def Jam Recordings at the beginning of her career. Since then the two are very close to each other. Jay-Z is very concerned about Rihanna's career. He is also said to be concerned Rihanna may be considering meeting up with her ex-boyfriend Chris Brown, reports stuff.co.nz.