It is difficult to conclusively state how the change of time affects human health; the results of the study are mutually exclusive - told PAP Dr. Dorota Wołyńczyk-Gmaj, psychiatrist, sleep disorders expert. However, since there are doubts in this matter, it is probably not worth the risk - she added.
Altruism among chimpanzees varies depending on status and sex, it is also an individual trait. These are the conclusions drawn from the two-year study of these apes - the closest evolutionary relatives of man - by psychologist Prof. Maciej Trojan from Nicolaus Copernicus University in Toruń.
After extreme exertion - for example, one hour run until exhaustion - the level of circulating free DNA in the blood dramatically increases. This marker is associated with tumours, inflammations or cell necrosis. Research of scientists from Łódź sheds new light on this issue.