What word is used incorrectly in this sentence good food will insure good health what is the correct word?

In Irish it's "bia maith, sláinte mhaith" insure should be "ensure" Lisa then began talking her through each step while demonstrating the techniques, adding: 'A little tip, don't be too aggressive with your balloons because they will pop. They can feel your emotions. So no aggressive pumping.' Auditions for series 18 were cancelled back in October following the shock death of  Liam Payne earlier that month aged 31, after the former X Factor healthy foods to gain weight contestant fell from a third-floor hotel balcony in Argentina.