The earth is a huge magnet.Human on the earth are effected by the magnetic field of the earth.This huge magnet is necessary for human just like human cannot live without water. air and the food.

Neodymium magnets less than 3000 gauss are not harmful to human.The magnets in the cell phone or toys are less than 1300 gauss. So most of neodymium magnets are safe to touch.

For example. a neodymium magnet with diameter 140mm and height 50mm has more than 3000 surface gauss.Bigger size,higher surface gauss. 

According to some tests.the bad effect of neodymium magnet more than 3000 gauss is only one fifth of TV radiation to human.