A food-safe paper straw, comprising an outer tubular element (110) made of paper material which extends along a longitudinal axis and a longitudinal insert (120) made of paper material positioned inside the outer tubular element (110) and stably connected to an inner surface of the outer tubular element (110), said insert (120) having a profile, in transversal cross section, defined by a line at least partly corrugated and/or partly broken in such a way as to increase the bending strength of the straw (100), wherein said insert (120) is stably connected to the inner surface of the outer tubular element (110) in at least two connecting zones (121), preferably at least three connecting zones (121), angularly spaced from each other about said longitudinal axis.