"These molecules generally increases brain levels in the blood in conditions of brain damage," said Christian Benedict neurologist. "Lack of sleep encourages neurodegenerative process. While a quality night's sleep may be very important to maintain brain health."
The study, published in the journal Sleep, another study released following the journal Science last October that found that sleep accelerate the cleanup of garbage cells in the brain. Included in this are the remains of beta amyloid, a protein that accumulates when the trigger Alzheimer's disease, according to research, which is applied to the mice.
Research sleep in toddlers
When children who have difficulty sleeping at night , a new study from the University of Colorado Boulder suggests that this is most likely due to the working hours of their organs incompatible with sleep .
Each person has a circadian rhythm that regulates when someone was sleepy and when someone was awake . The pattern varies according to age . That's why teens active at night and difficulty waking in the morning .
But what about the toddlers who need more sleep than teens and adults ? Monitoring study 14 infants aged 2-3 years for 6 days to find out . They are fitted on the wrist activity monitors to detect when they are sleeping .
Pm on the sixth day , the researchers visited each home , turn off the lights and cover windows. Then every 30 minutes for 6 hours to sleep , they persuade each toddler to chew the cotton to obtain saliva samples .
The reason : To test the level of the hormone melatonin, which regulates sleep cycles and sensitivity to light . Every night , melatonin levels rise and drowsiness came shortly thereafter . For adults who can sleep soundly , rise in melatonin levels generally occur approximately 2 hours before bedtime .
The findings of the research object
In infants , the study found that the average increase in melatonin levels occurred at around 19:40 . They are generally put to bed at 20:10 , and many of them fell asleep 30 minutes later , according to lead researcher Monique LeBourgeois through the journal Mind , Brain and Education .
If melatonin levels rise early, toddlers who sleep at 8 pm asleep faster . However, if the increase in melatonin too close to bedtime , toddlers tend to be fussy so the lights went out .
" We do not know at which point the determinant , " said LeBourgeois , but the data shows the most effective sleep time was 30 minutes after melatonin levels rise .
Scientific way towards sleep soundly
The study reinforces the notion of doctors over the years, said Jyoti Krishna , an expert pediatric medical academy in the center of the Cleveland Clinic . Other factors can also interfere with sleep toddler , like a noisy sound , stress or anxiety , or home routine is disrupted.
" However, this study reminds us that there are times when the body is ready to sleep than any other time , " said Krishna .
According to the National Institutes of Health ( NIH ) , toddlers need to sleep for 11-12 hours every day . While about 25 percent of toddlers have trouble sleeping , including can not sleep at bedtime , obviously LeBourgeois .
A number of steps that can help : Research has shown that in adults , excessive light in the evening melatonin levels and delay the increase drowsiness surely follow. Although there are no data for toddlers , LeBourgeois said dim the light an hour before bedtime becomes a reasonable option .
Avoid electrical appliances before bedtime , because normally secrete a type of light that makes awake . And make sure the curtain covering the window does not prevent the sun from early morning to get into the children's room , up LeBourgeois . The light in the morning is also important for maintaining the biological sleep clock to fit the schedule .
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