Are magnets harmful to people's brains or bodies? A magnet with a length of 5 cm and a width of 2 cm, if placed in the place where it lives for a long time, will it harm and affect people's brain and body? The earth has a very strong magnetic field, which is slowly deviating, and creatures have an adaptation and dependence on geomagnetism.

Local magnetism is restricted by the activities of celestial bodies (especially the sun). When the direction and intensity of magnetic force suddenly change irregularly, it will affect the growth and health of human body.

Paleontological research shows that when the local magnetic field weakens, some creatures on the earth are greatly reduced or even extinct.

Magnets are mostly physical magnets, which are harmful to human body. The sum of magnetic waves combined by two poles of traditional magnets presents a positive magnetic field effect, which is a kind of magnetic field pollution to health.

A small magnet can attract nails a few centimeters away. The clock placed next to the magnet will affect the accuracy of walking time.

Generally used small magnets, the magnetic induction intensity is not large, and it should have no serious impact on the human body.

Strong magnetic radiation is harmful to human body. According to the data, magnets below 3000 gauss (magnetic field unit) will not cause harm to human body, and magnets with magnetic field intensity above 3000 will do harm to human body.

People used to experiment with animals such as fish, mice, termites, snails, fruit flies and earthworms. The results showed that rats grew slowly and lived short in a strong uniform magnetic field. In the uneven magnetic field, its mortality will increase; Under the stable magnetic field as high as 3000 ~ 4000 gauss, its sexual cycle can disappear.

The infiltration of magnetic field will harm the central nervous system and cardiovascular system ... it has an important influence on the growth, life activities and behavior habits of organisms.