The effect of 3 months of melatonin 4mg treatment on glucose tolerance in different variants of the melatonin receptor 1B gene will be evaluated. The following will be done at 0 and 3 months: - OGTT - questionnaires about sleep and activity - Actigraph - Anthropometry - Blood pressure
Name: Melatonin
Description: Glucose tolerance is measured in OGTT: 0,30,60,90 and 120 minute values of glucose and insulin.
Measure: Glucose tolerance Time: 3 monthsDescription: monitoring of sleep with questionnaires and activity monitoring
Measure: sleep Time: 3 monthsDescription: Activity and sleep of the subjects is recorded with Actigraph at 0 and 3 months
Measure: Activity Time: 3 monthsAllocation: N/A
Single Group Assignment
There is one SNP
Does Melatonin Treatment Affect Glucose Tolerance Among Individuals With a Variant (rs10830963) of the Melatonin Receptor 1B (MTNR1B) Gene?. Melatonin and Glucose Tolerance Among Individuals With a Variant of the MTNR1B Gene The effect of 3 months of melatonin 4mg treatment on glucose tolerance in different variants of the melatonin receptor 1B gene will be evaluated.