But she also insisted a colleague’s backing for the controversial Cadbury Get Active campaign was not a government endorsement.
The Commons Health Committee, investigating obesity, cross-examined Johnson last week about reports of a rift between the health and culture departments.
The health minister dismissed such suggestions, insisting the departments were “working closely together.”
Former Tory health minister Simon Burns recalled how sports minister Dick Caborn had backed the Cadbury Get Active campaign and said that this had amounted to a government endorsement.
But Johnson insisted it was a matter of interpretation.
Repeatedly challenged over whether ministers had been at odds over the Cadbury campaign, she conceded: “It is unlikely there will be other such campaigns.”