▁stat ure . ▁The ▁orig ins ▁of ▁this ▁phen ot ype ▁( found ▁in ▁the ▁Ag ta , ▁A ti , ▁and ▁A eta ▁tribes ▁in ▁the ▁Philippines ) ▁are ▁a ▁continued ▁topic ▁of ▁debate , ▁with ▁recent ▁evidence ▁suggesting ▁that ▁the ▁phen ot ype ▁conver g ently ▁evol ved ▁in ▁several ▁areas ▁of ▁sout heast ▁Asia . ▁ ▁However , ▁recent ▁genom ic ▁evidence ▁suggests ▁that ▁the ▁M aman wa ▁were ▁one ▁of ▁the ▁first ▁populations ▁to ▁leave ▁Africa ▁along ▁with ▁pe op les ▁in ▁New ▁Guinea ▁and ▁Australia , ▁and ▁that ▁they ▁diver ged ▁from ▁a ▁common ▁origin ▁about ▁ 3 6 , 0 0 0 ▁years ▁ago . ▁ ▁Currently , ▁M aman wa ▁populations ▁live ▁in ▁sed ent ary ▁settlement s ▁(" bar ang ays ") ▁that ▁are ▁close ▁to ▁agricult ural ▁pe op les ▁and ▁market ▁cent ers . ▁As ▁a ▁result , ▁a ▁substantial ▁proportion ▁of ▁their ▁di et ▁includes ▁st arch - den se ▁domestic ated ▁food s . ▁The ▁extent ▁to ▁which ▁agricult ural ▁products ▁are ▁bought ▁or ▁ex changed ▁var ies ▁in ▁each ▁M aman wa ▁settlement ▁with ▁some ▁individuals ▁continu ing ▁to ▁farm ▁and ▁produce ▁their ▁own ▁domestic ated ▁food s ▁while ▁others ▁rely ▁on ▁purch asing ▁food ▁from ▁market ▁cent ers . ▁The ▁M aman wa ▁have ▁been ▁exposed ▁to ▁many ▁of ▁the ▁modern ities ▁main stream ▁agricult ural ▁populations ▁possess ▁and ▁use ▁such ▁as ▁cell ▁ph ones , ▁televis ions , ▁radio , ▁processed ▁food s , ▁etc . ▁ ▁The