One Direction are reported to have been put on a healthy-eating regime by their management team, amid concerns that their nutritional standards are suffering [uuid=7f4bef63-a157-468f-a53a-316c9be1fa5c]while on tour[/uuid].
The Mirror claims that "top cook" Sarah Nicholas has been recruited to cater for the fivesome while they are on the road - serving them tasty-but-wholesome food.
A source said: "Sarah worked with the guys on their last tour and became like a surrogate mum for them all, particularly Harry. She tries to offer the boys their favourite foods but healthier versions of them, using natural, often organic ingredients. They particularly like Mexican food.
"With 1D's hectic schedule and gruelling lifestyles, it's essential they eat properly and start looking after themselves.
"This basically means Sarah has been charged with getting more fruit and veg down them, and staving off colds as much as possible. They're currently drinking loads of smoothies."
Nicholas has apparently previously worked with other music stars including JLS, Olly Murs, Il Divo and Jedward.