Whakarāpopototia te tuhinga:  Ko tā te kaihautū matua o te rangahau, he 'ohorere' ngā hua, engari ehara i te take hei whakapiki i te pauna. He maha nga tau e korerotia ana ki a tatou ko te taahiraa tuatahi ki te noho hauora ko te pupuri i te taumaha hauora - ko te tikanga ko te whakarite kei roto i te awhe noa o te Body Mass Index (BMI) o te 18 ki te 24. He torutoru noa iho ngā tāngata e tohutohutia kia taumaha ake, ki te kore e iti iho te BMI i te 18, engari ka taea rānei te huri? E ai ki tētahi rangahau i whakaputaina i te wiki kua pahure ake nei, he iti ake te tūponotanga o ngā tāngata taumaha rawa ki te pāngia e te mate hē. Ko nga kairangahau, i ahu mai i te London School of Hygiene and Tropical Medicine, i tātari i nga tuhinga hauora o te tata ki te rua miriona tangata mo te tekau tau, a, i kitea ko te hunga taumaha (me te BMI o te 25 ki te 29) he 18 ōrau te iti ake o te mate o te dementia i whakaritea ki te hunga me te BMI hauora. He mea whakamiharo ko te hunga momona (me te BMI o te 30 neke atu) i pai ake; he 24% iti iho te tupono ki te whanake i te koretake. Ko te iti o te taumaha ka whakapiki i te mōrea o te ngoikore ki te 39 ōrau. I kī a Dr Nawab Qizilbash, he kairangahau haumanu me te kairangahau matua, he 'whakakahoretanga' ngā hua, engari kāore i te kī he take hei whakapiki i te pauna: 'He rangahau pakari, pono hoki tēnei e whakatuwhera ana i tētahi huarahi ki te rapu i ngā take e tiaki ana i te mate o Alzheimer.' Engari ehara i te mea tino nui ēnei hua. E toru tau ki muri, he rangahau nui ake, i whakaputaina i roto i te Journal of the American Medical Association, i pūrongo mai he nui ake te roa o te ora o te hunga taumaha rawa atu i te hunga taumaha noa. I tātarihia e te rangahau ngā whakamātautau 100 e toru miriona tāngata. I kitea e te taumaha nui (he BMI i waenganui i te 25 me te 29) i whakaiti i te tūponotanga o te mate wawe e ono ōrau i whakaritea ki te tangata he BMI noa. Ko te mea nui ake i miharo ko te mea ahakoa ko te tangata kei te pito o raro o te mate taimaha (BMI o 30 ki te 34.5) kaore i piki ake te tupono o te mate wawe. I tīmata te taikaha ki te whakaiti i te roa o te ora i te wa i piki ake ai to BMI ki runga ake i te 35 - i konei ka piki ake te tupono o te mate wawe ki te 29 ōrau nui atu i te hunga me te BMI noa, e ai ki te rangahau, i arahina e Dr Katherine...
E ai ki tētahi rangahau he iti ake te tūponotanga o te hunga taumaha rawa ki te pāngia e te mate hē. Ko te hunga he BMI o te 25 ki te 29 he 18% iti ake te mōrearea. Ko te nui ake o te ngako ina mate koe e pā ana ki te whakaora pai ake. He mea whakamiharo ko te hunga momona (me te BMI o te 30 neke atu) i pai ake te mahi.