(Reuters) - Danone beat second-quarter sales expectations on Wednesday, with volumes increasing as it continued to invest more into growing its high-protein, coffee creamer and medical nutrition categories.

The maker of Activia yoghurt, Evian water and Aptamil infant milk said like-for-like sales rose 4.0% to 6.94 billion euros ($7.51 billion) in the quarter ended June, above expectations of a 3.7% growth in a company-compiled consensus.

($1 = 0.9239 euros)

(Reporting by Agata Rybska; Editing by Varun H K)