ʻO ka nele o nā huaora i loko o ke kino o ke kanaka e hiki ke alakaʻi i nā maʻi he nui, i hikiʻole ke kūponoʻole i nā hopena biochimique e pili ana i kēia mau huaora.
No ka lōʻihi, uaʻike ke kanaka i kahi maʻi i kapaʻia he scurvy. ʻO kēia maʻi i ulu pinepineʻia e nā luina i holo ma nā huakaʻi lōʻihi no nā mahina he nui. Hōʻikeʻia ka Scurvy e ka hoʻonuiʻia o nā paia o nā kīʻaha koko, nā kīʻaha koko, ka weheʻana a me ke nihoʻana o nā niho. Ma hope wale nō o ka loaʻaʻana o ka huaora uaʻikeʻia ua ulu ka scurvy i kahi kino o ka huaʻaa C (inoa'ē aʻe no kēia huaʻaha he ascorbic acid). Ke hoʻololi nei i ka neleʻana o kēia waiwai i loko o nā kānaka, ua hoʻopauʻia ka inoa o ke kīpoki pilgene, a ua lilo i nā hopena maikaʻiʻole. Aʻo ka mea iʻikeʻia i ka wā Ma waena e loaʻa pinepineʻia i ka poʻe holo, no ka mea, i ka wā kahiko i hoʻopau kokeʻia ka hāʻawiʻana i nā huaʻai a me nā huaʻai i nā moku. I kēia manawa uaʻikeʻia ka loaʻaʻana o ka waika ascorbic i nā huahana o ka mea kanu. Ma mua,ʻaʻole iʻikeʻia kēiaʻike (ʻoiai ma ka makahiki 1880 e pili ana i nā huaora e like me ia i ka poʻeʻepekemaʻepekema. I kēia manawa,ʻo ka maʻi wīpī ma muli o ka nele o ka huaʻa C,ʻaʻole ia i maʻalahi, aʻo ke kumu nui o ka hopena, he maʻiʻino ia i ka meaʻai. Ināʻoe eʻai i kēlā me kēia lā i ka liʻiliʻi o nā huaʻai a hua paha, ponoʻoleʻoe e hopohopo i keʻano o kēia maʻi.
No nā maʻi i loaʻa i ka hapa o ka huaʻaʻa A, hememelopia, aiʻole, i ka wā i kapaʻia ai e nā kānaka kēia maʻi, "pouli makapō". Me kēiaʻano maʻiʻole,ʻike pono ke kanaka i ka manawa o ka lā, akā i ke ahiahi,ʻikeʻoleʻo ia i nā mea e pili ana i nā mea pili. Hiki ke nānāʻia kēiaʻano he hōʻailona mua o ka pukaʻana mai o ka huaʻo'Amaila A i kaʻai. Me ka lōʻihi o ka vitamin A ma kaʻaiʻana o kānaka, e ulu ana ka xerophthalmia, eʻikeʻia ana e ka maloʻo o ka'ōnohi o ka maka. ʻO ke kumu no ka uluʻana i kēia mau maʻi,ʻo ia ka hōʻino i ka laweʻana a me ka laweʻana i loko o ke kino o nā momona. ʻOiaiʻo ka momona A he momona ka momona, ma muli o ka hakiʻana i ka metabolism o nā momona i loko o ke kino a he hemahema kēia mea ola honua,ʻoiaiʻo kaʻai pono'ī ke komo i ka nui o ka huaʻai A. Inā he meaʻole ka huaʻa A ma kaʻai, laila ua maʻalahi kēia. e hoʻoponopono i ka hoʻokomoʻana i loko o ka papa inoa o nā kīʻaha mai nā kāloti, nā'ōmato, ka pi.
ʻO ka nele o ka lāʻauʻona D ka maʻi i nā keiki i kapaʻia he'alapoki. Me kēia maʻi, ua hoʻopauʻia ka papa hana maʻamau o ka iwi āpau, a ua hoʻolōʻihiʻia ka uluʻana o nā niho. ʻO nā kumu o nā huaʻaina D he mau meaʻai e like me ka ate, ka pata, ka'ōpū kiko. Loaʻa ka nui o ka huaʻaina D i kaʻaila iʻa.
ʻO ka Vitamin E he mea waiwai nui loa e ola ana i loko o nā hana physiological o ka hoʻomohalaʻana i ka'ōnaehana hānau. Me ka nele o ka meaʻona A i loko o nā kāne, uaʻeha ka spermatozoa, a ma nā wāhine, hiki ke hoʻololi i ka uluʻana o ka'ōpū. ʻO ka hoʻohanaʻana i nā huahana o kēia mau lā o ka hua'ūmona ma o ka hoʻohanaʻana i nā huahana e like me kaʻaila meaʻai, ka'ati, ka lūlū, ka kāpelu.
ʻO kēia mau maʻi e hōʻike i kaʻike ponoʻoleʻo ka nele o kekahi mau huaora i loko o ka meaʻai kanaka ke kumu o ka uluʻana i nāʻano maʻiʻole. No laila, i mea e pale ai i ka uluʻana o kēia mau maʻi, pono mākou e hoʻoikaika e hoʻomāhuahua i kā mākouʻai, e like me nā huahana o nā holoholona a me nā mea kanu. Hiki keʻaeʻana pēlā, inā hiki, e hōʻoia i ka laulā nui o nā mea olaolaola i loko o ka meaʻai a pale i ka uluʻana o nā maʻi i loaʻa i ka nele i nā hua.