Kids raised in very clean environment have a high chance of developing allergies and autoimmune disease later in life than kids raised in so called dirty environment.

This is because children re born with their mother's immunity which cannot protect the kids for long.
But when the children re being exposed to the environment they have the chance to acquire their own immune independent of the inborn immune that is specific to a particular disease.

So allowing ur children to play in sand is a way of helping them to be exposed to few micro organisms which helps their body to develop immunity to continue fighting the particular disease in years or even throughout their life.

This is the same process of vaccination but in this case and active natural acquired immunity

lampi:
Kids raised in very clean environment have a high chance of developing allergies and autoimmune disease later in life than kids raised in so called dirty environment.

This is because children re born with their mother's immunity which cannot protect the kids for long.
But when the children re being exposed to the environment they have the chance to acquire their own immune independent of the inborn immune that is specific to a particular disease.

So allowing ur children to play in sand is a way of helping them to be exposed to few micro organisms which helps their body to develop immunity to continue fighting the particular disease in years or even throughout their life.

This is the same process of vaccination but in this case and active natural acquired immunity

Insecurity has taken away that era.