My daughter is 20 months old and has always been very consistent with her weight gain. Over the last two months though she has lost 0.5kg. She eats loads but is a typically active toddler. I'm not especially worried as she lost less this month than last so hopefully going in the right direction, but I think if she loses more next month I will take her to see the HV just to be sure. Just wondering how normal some weight loss is though and at what point it has become of concern?