Astfel, în timp ce creierul unui vânător din vechime măsura 1.500 de centimetri cubi, astăzi creierul unui om normal are 1.200 centimetri cubi, potrivit rezultatelor unui studiu realizat pe niște fosile ce datează de acum 20.000 de ani și citat de Daily Mail.
Oamenii de știință mai spun că strămoșii noștri erau mai robuști, mai musculoși și mai înalți decât suntem noi. În timp ce acum 10.000 de ani un om normal cântărea între 79 și 85 de kilograme, în zilele noastre are o greutate cuprinsă între 70 și 79 de kilograme.
De vină pentru acest fapt ar fi agricultura, dietele și procesul de urbanizare, cel care a permis o răspândire mult mai ușoară a bolilor.
Experții au ajuns la concluzia că procesul de micșorare a omului a început în urmă cu 9.000 de ani. Atunci omul ar fi trecut de la un trai bazat pe vânătoare, la o viață centrată pe agricultură, lucru care a dus la o scădere a aportului de vitamine și minerale.
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