minerals are a critical component of health. without them you will be in ill health or possibly die. its just a fact.
modern farming methods have created mineral deficient plants, therefore we have to get the minerals from elsewhere. your body cannot manufacture minerals, they must be taken in from outside your body. if your food doesn't have the critical minerals essential for health, then where will you get them?
thats why i always say kelp is the best minerals source, its plant based, and really its a food, not a supplement.