http___matrixworld-hr.com_2012_05_09_konzumacija-bobicastog-voca-moze-usporiti-opadanje-u-radu-mozga__1.xml
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Eating more berries may reduce cognitive decline in the elderly Blueberries and strawberries, which are high in flavonoids, appear to reduce cognitive decline in older adults according to a new study recently published in Annals of Neurology, a journal of the American Neurological Association and Child Neurology Society. The study results suggest that cognitive aging could be delayed by up to 2.5 years in elderly who consume greater amounts of the flavonoid-rich berries. Flavonoids are compounds found in plants that generally have powerful antioxidant and anti-inflammatory properties. Experts believe that stress and inflammation contribute to cognitive impairment and that increasing consumption of flavonoids could mitigate the harmful effects. Previous studies of the positive effects of flavonoids, particularly anthocyanidins, are limited to animal models or very small trials in older persons, but have shown greater consumption of foods with these compounds improve cognitive function. According to the 2010 U.S. Census, elderly Americans -- those 65 years of age and older -- increased by 15% between 2000 and 2010, faster than the total U.S. population, which saw a 9.7% increase during the same time period. "As the U.S. population ages, understanding the health issues facing this group becomes increasingly important," said Dr. Elizabeth Devore with Brigham and Women's Hospital and Harvard Medical School in Boston, Mass. "Our study examined whether greater intake of berries could slow rates of cognitive decline." The research team used data from the Nurses' Health Study -- a cohort of 121,700 female, registered nurses between the ages of 30 and 55 who completed health and lifestyle questionnaires beginning in 1976. Since 1980 participants were surveyed every four years regarding their frequency of food consumption. Between 1995 and 2001, cognitive function was measured in 16,010 subjects over the age of 70 years, at 2-year intervals. Women included in the present study had a mean age of 74 and mean body mass index of 26. Findings show that increased consumption of blueberries and strawberries appear to slow cognitive decline in older women. A greater intake of anthocyanidins and total flavonoids was also associated with reduce cognitive degeneration. Researchers observed that women who had higher berry intake delayed cognitive aging by up to 2.5 years. The authors caution that while they did control for other health factors in the modeling, they cannot rule out the possibility that the preserved cognition in those who eat more berries may be also influenced by other lifestyle choices, such as exercising more. "We provide the first epidemiologic evidence that berries may slow progression of cognitive decline in elderly women," notes Dr. Devore. "Our findings have significant public health implications as increasing berry intake is a fairly simple dietary modification to test cognition protection in older adults." Source: Wiley-Blackwell Related - Staying sharp: New study uncovers how people maintain cognitive function in old ageMon, 8 Jun 2009, 16:42:42 EDT - Cognitive decline incidence higher in Southern stroke belt Thu, 26 May 2011, 22:40:42 EDT - Common medication associated with cognitive decline in elderlyMon, 26 Jan 2009, 12:56:55 EST - Eating fish may prevent memory loss and stroke in old ageMon, 4 Aug 2008, 16:56:22 EDT - Eating berries may lower risk of Parkinson'sSun, 13 Feb 2011, 17:01:26 EST Other sources - Berries keep your brain sharpfrom Biology News NetFri, 27 Apr 2012, 4:00:29 EDT - Berries may preserve memoryfrom CBC: HealthThu, 26 Apr 2012, 16:50:12 EDT - Berries keep your brain sharpfrom Harvard ScienceThu, 26 Apr 2012, 16:20:45 EDT - Eating more berries may reduce cognitive decline in the elderlyfrom Science DailyThu, 26 Apr 2012, 12:31:26 EDT - Berries reduce cognitive declinefrom Science BlogThu, 26 Apr 2012, 1:00:21 EDT Latest Science NewsletterGet the latest and most popular science news articles of the week in your Inbox! 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Prevela i uredila: Barbara Arbanas-Kovačević Matrix World Žene koje jedu borovnice i jagode iskusile su sporiji mentalni pad tijekom godina nego žene koje konzumiraju manje voća bogatog flavonoidima, prema jednom američkom istraživanju. Rezultati ankete provedene nad više od 16 000 žena, koje su ispunile uobičajene upitnike o svojim zdravstvenim navikama u periodu od 1976. do 2001. god., su pokazali da su osobe koje su jele više bobičastog voća odgodile kognitivno opadanje za 2,5 godine. Istraživači su svake godine u periodu od 1995. do 2001. god. mjerili mentalne funkcije kod subjekata starijih od 70 godina, prema studiji objavljenoj u „Analima neurologije“. „Mi pružamo prvi epidemiološki dokaz da bobičasto voće može usporiti napredak kognitivnog opadanja kod starijih žena,“ kaže Elizabeth Devore, doktorica u Brigham i žena bolnici (Brigham and Women’s hospital) i Harvardske medicinske škole iz Bostona, Massachusetts. „Naši nalazi imaju važan utjecaj na javno zdravstvo jer je konzumacija bobičastog voća jednostavna prehrambena prilagodba kojom se ispituje kognitivna zaštita kod starijih odraslih osoba.“ Devore dodaje da su rezultati važni za stariju populaciju, koja je u porastu. Prema Australskom uredu za statistiku, broj Australaca dobi od 65 godina i naviše je porastao za 26 % od 2000. do 2001. god. Robert Graham, internist s Lenox Hill bolnice u New Yorku nije bio uključen u istraživanje, ali kaže da je jedenje veće količine bobičastog voća vrlo dobra ideja za ljude bilo koje dobne skupine. „Velika se epidemiološka istraživanja, poput ovoga, pridodaju osnovnim znanstvenim istraživanjima o tome da antioksidativna i protuupalna svojstva bobičastog voća igraju korisnu ulogu u kognitivnom opadanju vezanom uz dob,“ kaže Graham. „Savjetovao bih svim svojim pacijentima, bilo koje dobi, da jedu više bobičastog voća. Bobice su lagan, hranjiv i ukusan način očuvanja funkcija mozga.“ Flavonoidi su antioksidanti koji se nalaze u bobičastom voću, jabukama, citrusnom voću, čaju, crvenom vinu i kapuli, a prethodna su istraživanja pokazala da mogu reducirati rizik od srčanih bolesti, dijabetesa i raka. „Trenutno istraživanje pokazuje da su žene koje su najviše konzumirale flavonoide, osobito bobice, pokazale sporije kognitivno opadanje tijekom vremena nego žene koje su ih konzumirale manje,“ kaže Nancy Copperman, direktorica za javno zdravstvo s Židovskog zdravstvenog sustava North Shore-Long Island u New Yorku. „Povećanje konzumacije voća i povrća je jedan od najboljih načina da bismo živjeli zdravi život.“ Izvanredni profesor Shawn Somerset s Australskog katoličkog sveučilišta u Brisbaneu kaže da bi ljudi rađe trebali konzumirati širi raspon voća i povrća za koje se zna da sadrže flavonoide, nego se fokusirati samo na bobičasto voće. „Konzumacija povrća u Australiji je smanjena u odnosu na voće, pa bi konzumacija povrća trebala biti više promovirana od voća,“ kaže Somerset. „Najrazumniji savjet je konzumacija širokog raspona, nego velike količine određenih flavonoida s obzirom da je pretjerana količina nekih od njih problematična. To se odnosi na konzumaciju šireg raspona povrća i voća, a ne samo na jednu vrstu.“