Conform studiului, oamenii care locuiesc în oraşe foarte bine iluminate au şanse mai mari să devină obezi decât cei care locuiesc în mediul rural, cu mai puţine surse de lumină, chiar dacă mănâncă egal cantitativ. Motivul? Oamenii de ştiinţă susţin că luminile stradale încurajează gustările nocturne iar caloriile acumulate seara au mai puţine şanse să fie arse. Concluzia cercetătorilor devine însă şi mai interesantă, aceştia susţinând că şi lumina din casele noastre, de la televizor sau de la monitorul calculatorului au acelaşi efect.
Savanţii au studiat comportamentul unor şoareci şi au descoperit că cei expuşi la o sursă de lumină în timpul nopţii au devenit cu 50 % mai graşi decât ceilalţi, deşi li s-a oferit exact aceeaşi cantitate şi acelaşi tip de hrană.
„Iluminatul nocturn este un factor care poate contribui la epidemia de obezitate într-o manieră la care nimeni nu se aştepta”, a declarat profesorul Randy Nelson, de la Universitatea de Stat din Ohio.
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