The exhibition to light and the hold of melatonin supplements could improve the mood and the sleep of the aged people affected by craziness, in addition to slow down the cognitive decline, sustains a survey néerlandaise1.
The results of the survey are however modest. But, the effect on the reduction of the cognitive decline would be comparable to the one of a medicine. anticholinestérasique year – managed often to the people who suffer from craziness, advance the researchers.
The clinical test that lasted 15 months on average, has been led by resident of 189 homes for aged people of which 87% suffered from craziness.
At the time of the survey, the topics were exposed, during the day, to a luminous intensity of about 1 000 lux (active treatment) or 300 lux (group witness). Lights destined to the active treatment have been installed in the common room of the residences. The participants also received 2.5 mg of melatonin in evening, or an identical placebo.
The topics that took the melatonin without being exposed to the intense light showed symptoms of fold on oneself, return the researchers. This undesirable effect did not appear at those that were also submitted to the light.
In the light therapy group, but that did not take a melatonin, one noticed the positive effects on mood, the sleep and the reduction of the cognitive loss. But the kindness on the sleep were bigger in the group that took supplements of melatonin and that was also exposed to light.
According to the authors of the survey, the luminous intensity should be increased in the homes for people suffering from senile craziness. The melatonin should not be used without treatment of light and a lower dosage to 2.5 mg per day could be appropriated more, they add.
Let’s recall that the light and melatonin have a regulating action on the sleep cycle of the (circadian cycle). The authors believe that the kindness observed among the subjects of the survey result from an improvement of the cycle standby / sleep that is usually disrupted at people suffering from senile craziness.
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