I've heard it's not safe to add salt or sugar to your baby's food till they're 1 year old. Anyone know why?

Don't spoil her taste bud with salt or sugar. Try other food types. Cook porridge with pork n pumpkin but take away the pork before serving. The sweetness of the pork gets into the porridge plus the pumpkin too. I would only intro after age 2 - both salt and soya sauce