Matsala: Watakila ba gyada bane, amma abin da hanjinka ke yi da su
Idan ka ci gyada, jikin ka ba ya shan ellagitannins kai tsaye. Kwayoyin ƙwayoyin hanjinka (microbiota) ne ke sauya su zuwa urolithins. wani sabon binciken MRI ya nuna cewa yawan waɗannan urolithins da jiki ke samarwa a tsawon lokaci na iya bin diddigin yadda cortex na kwakwalwa ke riƙe da ƙaurinsa yayin tsufa.
Binciken da Galkina da ƙungiyarta suka jagoranta, wanda aka wallafa a Food & Function, shi ne ƙaramin gwaji na MRI da aka gudanar a tsawon shekaru 2 a cikin shirin Walnuts and Healthy Aging (WAHA) – wani gwaji mai sarrafa kansa (PubMed 42841852; DOI 10.1039/d6fo02116f; NCT01634841). Ga abin da aka gano da abin da ba a tabbatar ba.
Abin da masu bincike suka yi a zahiri
WAHA gwaji ne da aka gudanar a cibiyoyi biyu (Barcelona, Spain da Loma Linda, California) inda aka ba mahalarta gyada a kowace rana na tsawon shekaru 2 sannan kuma aka ba su abincin sarari. ɓangare na mahalarta a Barcelona sun halarci MRI na kwakwalwa a farkon gwajin da kuma bayan ƙarewar shekara 2.
- Mahalarta: mutane 104 masu lafiya a tunani, 55 daga cikinsu suna cikin rukunin da ke cin gyada.
- Abubuwan da aka auna: kaurin cortex – alamar da ake amfani da ita don tantance raguwar kwakwalwa da ke faruwa da shekaru.
- Matsayin sinadaran hanji: urolithins a fitsari, an auna su da liquid chromatography‑high‑resolution mass spectrometry.
- Tambaya: shin canje‑canjen urolithins a tsawon shekaru 2 suna tafiya hannu da hannu da canje‑canjen kaurin cortex a wannan lokaci?
- Hanyar: nazarin layi‑mai‑yawa (linear mixed‑effects model) da aka daidaita da canjin yawan urolithins, an ware sakamako bisa metabotype na urolithin.
Sakamakon da ya fi daukar hankali
A tsakanin mutanen da ke cin gyada, ƙaruwa mafi girma a cikin sinadarai uku na fitsari an haɗa da riƙe kaurin cortex mafi inganci:
| Kwayar | β na ƙaruwa (1‑SD) | 95 % CI |
|---|---|---|
| Urolithin A | 0.023 | 0.003 – 0.043 |
| Urolithin C | 0.015 | <0.001 – 0.029 |
| Urolithin C‑glucuronide | 0.017 | 0.002 – 0.031 |
Ana ganin wannan alaƙa musamman a yankin cortex na hannun dama, kuma tana da ƙarfi a mutanen da ke da metabotype B.
Ko da yake ƙimomin confidence interval sun kusan taɓa sifili, musamman ga urolithin C, wannan na nufin sakamakon ba su da ƙarfi sosai – alama ce kawai, ba hujja ba.
Menene metabotype?
Mutane ba duka suke samar da irin urolithins ɗaya ba. Masu bincike suna rarraba mahalarta zuwa metabotypes:
- Metabotype A – yafi samar da urolithin A.
- Metabotype B – yafi samar da urolithin B da wasu nau’o’i.
Wannan rarrabuwa an yi ta ne don bayyana bambancin mutum‑zuwa‑mutum. Ta nuna cewa sakamakon na iya tallafa wa ra’ayin abincin da ya dace da kai – wato irin abincin da zai yi tasiri daban‑daban gwargwadon halittar hanjinka.
Ƙananan bayanai da ba za a watsar ba
Taken ya ja hankali, amma shaidar tana da iyaka.
- Haɗi ne, ba dalili ba. Binciken yana nazarin alaƙa ne a cikin wani gwaji da aka sarrafa – an sarrafa tsakanin gyada da abincin sarari, ba tsakanin matakan urolithin da kaurin cortex ba. Ɗaga urolithins na iya zama alamar halayen gaba ɗaya, kamar yanayin cin abinci, lafiyar hanji, ko wasu sinadarai.
- Alamomin sun bayyana ne a rukunin gyada. Babu wani irin haɗi da aka gani a ƙungiyar sarari.
- Samar da bayanai ne daga ɓangare ɗaya. Mutane 104 daga cibiyar guda ne suka halarci MRI, kuma dukkansu suna da lafiyar tunani – ba za a iya fassara sakamakon ga masu cutar sankarar tunani ba.
- Ba a gwada kari ba. An auna urolithins da suke fitowa daga abinci; ba a ba da wani ƙarin urolithin A ba, don haka ba za a ce shan kari zai ƙara kaurin cortex ba.
- Kaurin cortex ba yana nufin ƙara ƙwaƙwalwa ba. Yana nufin adadin da aka auna a MRI, amma babu shaidar da ke nuni da rage haɗarin dementia ko ƙara ƙwaƙwalwa.
Abubuwan da za a iya amfani da su a zahiri
Mita
Takaitaccen bai bayyana adadin gyada da aka ci ba, kuma ba ya ba da ƙima ga kari na urolithin A – domin ba a gwada shi. A takardar WAHA, an ba da shawarar gram 30–60 na gyada a kowace rana, amma ka duba cikakken takarda kafin ka ɗauki wani mataki.
Lokaci
Canjin da aka gani ya faru a shekaru 2 na cin gyada a kowace rana. Binciken bai tattauna yadda canjin ke faruwa a ƙananan lokaci (misali makonni ko watanni) ba.
Waɗanda za su iya amfana
- Mutanen da ke neman dabarun abinci masu tallafa wa tsawon rayuwa da kwakwalwa – gyada na ɗaya daga cikin zaɓuɓɓuka masu gina jiki.
- Wadanda ke sha’awar personalized nutrition – domin metabotype na iya ƙara ƙarfafa alaƙar tsakanin urolithin B da kaurin cortex.
Waɗanda za su guje ko su yi hankali
- Masu alerji ga ƙasaƙa – su guje wa gyada gaba ɗaya.
- Masu neman kari na gaggawa ga kwakwalwa – wannan takarda ba ta ba da hujja kan hakan ba.
- Masu takamaiman tsarin abinci ko ke ƙidaya kalori – su nemi shawarar ƙwararren likita ko masanin abinci kafin ƙara gyada a kowane yini.
- Masu fama da damuwa ko wasu nau’o’in cutar kwakwalwa – su tuntuɓi likita maimakon dogaro da sakamakon wannan bincike.
Dalilin da ya sa wannan ke da muhimmanci a binciken tsawaita rai
Wannan bincike ya ƙara igiyar kimiyya ga ra'ayin da ake da shi kan alakar gyada da tsawon rayuwa. An dade ana danganta gyada da lafiyar zuciya da kwakwalwa; a nan an nuna cewa microbiota na hanji na iya mayar da ellagitannins zuwa urolithins masu aiki. Idan wannan hanyar ta tabbata, abin da muke ci ba shi kaɗai ne, har ma da yadda hanjinmu ke sarrafa shi zuwa sinadarai masu tasiri.
Masu binciken sun yi nuni da cewa matakai na gaba sun haɗa da:
- ƙara adadin mahalarta,
- sake gwadawa a wata cibiyar bincike,
- da kuma gwada kariya ta urolithin A kai tsaye tare da auna sakamakon kwakwalwa da hoton MRI.
Gaba ɗaya
A cikin mutane 104 masu lafiya a tunani, ƙaruwa mafi girma a matakan urolithin A, urolithin C, da urolithin C‑glucuronide a tsawon shekaru 2 an haɗa da riƙe kaurin cortex a tsakanin masu cin gyada, musamman a metabotype B. Wannan alaka na nuna wani kyakkyawan dangantaka tsakanin abinci, microbiota, da tsufar kwakwalwa, amma ba hujja ba ce da ke nuna cewa gyada ko kari na urolithin A suna kare kwakwalwa.
Asali: Galkina et al., Food & Function; PubMed 42841852; DOI 10.1039/d6fo02116f. Wannan labarin na nuni ne kawai ga bayanai, ba shawarwarin likita ba.
