When it comes time to sleep, it is common for each person to have a different way of resting – it may be that they only sleep one way, or the other. But as is customary to say, the important thing is that at that moment the light is off.
This recommendation can be reinforced after the result of a new research with patients with breast cancer .
According to the researchers, exposure to light at night, even at low intensity, can increase the chances of cancer to metastasize in the bones , that is, to spread to other regions.
The information came after animal tests were done. The results were presented at a meeting of The Endocrine Society, a medical organization in the field of endocrinology and metabolism.
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How can this happen?
After the tests, the researchers observed that, like humans, rodents have high nocturnal levels of melatonin, that is, they also produced this hormone during the night.
This melatonin is responsible for promoting sleep and, in the study, proved to be an important agent in the body’s defense system, controlling cancer.
The scientists injected the mice with a breast cancer cell and placed them in exposure to light at night.
