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Da li razmišljate o dijetama na bazi mesa, kao na primer o Atkinsonovoj dijeti? Evo šta kaže o tome Dr John McDougall: „Ja ih zovem 'dijete koje te razbole', jer one prouzrokuju ketozu – stanje do koga dođe kada smo ozbiljno bolesni. Tako ih zovem zbog toga što hrana koju preporučuju – meso, piletina, slanina, jaja i sirevi – jeste hrana za koju Heart Association (Koronarno udruženje) i Cancer Society (Udruženje za rak) kažu da uzrokuje najteže bolesti.”
ŠTETNOSTI KUVANOG MLEKA
Deca koja su podizana na kravljem mleku imaju znatno niži IQ od one dece koja su podizana na majčinom mleku. Jedna od svakih 5 beba pati od kolika. Pedijatri su davno naučili da je kravlje mleko uzrok toga. Danas znamo da majke koje hrane svoju decu svojim mlekom mogu imati bebe sa kolikima, ako majke uzimaju kravlje mleko. Ako se bebama daje kravlje mleko može se javiti šećerna bolest i dijabetes tipa 1 u njihovom kasnijem životu. „Klinička ispitivanja pokazuju kako kravlje mleko uzrokuje mnoge zdravstvene probleme (prehlade, alergije, infekcije uva, bronhitis, astmu i dr.) zbog kojih često posećujemo lekare”....citiramo Michael Klaper, doktor medicine, nutricionistički stručnjak i autor knjige Pregnancu, Children, and the Vegan Diet.
http://www.vegetarijanstvo.ns.co.yu/Kako%20se%20zdravo%20hraniti.htm
Miševi koji su tokom devet meseci hranjeni brzom hranom imali su znake razvoja proteinskih plakova na mozgu, karakterističnih za obolele od Alchajmerove bolesti.
Opasno po mozak, srce, jetru
Ishrana bogata masnoćom, šećerom i holesterolom može da poveća rizik od pojave najčešćeg oblika demencije - Alchajmerove bolesti, pokazalo je istraživanje koje su sproveli švedski stručnjaci sa Instituta "Karolinska".
"Nakon pregleda mozgova miševa, ustanovili smo prisutnost hemijskih promena nalik promenama koje su prisutne u mozgu obolelog od Alchajmerove bolesti", istakla je Suzane Atkerin, istraživač Centra za istraživanje Alchajmerove bolesti pri Institutu "Karolinska".
Prema njenim rečima, visok unos masti i holesterola u kombinaciji sa naslednim faktorom može uticati na nekoliko supstanci u mozgu, što, opet, može dovesti do razvoja Alchajmerove bolesti.
Alchajmerova bolest nije izlečiva i najčešći je oblik demencije među starijom populacijom.
Mozak pacijenta koji boluje od Alchajmerove bolesti ima karakterističan oblik sa abnormalno oblikovanim proteinskim plakovima i fibrilama.
Ovaj oblik nemaju svi delovi mozga i najčešće utiče na delove mozga koji su zaduženi za mišljenje, pamćenje i govor.
Najnoviji lekovi usmereni su na uklanjanje grudvica beta amiloid proteina (beta amyloid) koje se stvaraju u mozgu, međutim, naučnici intenzivno tragaju i za terapijama kojima bi moglo da se utiče na toksične naslage nastale nagomilavanjem tau proteina.
Varijacija gena
Tokom istraživanja, Atkerinova je, zajedno sa timom stručnjaka koji je predvodila, posebnu pažnju obratila na analizu varijacije gena apo E4 (apoE4) koja je prisutna kod 15 do 20 odsto obolelih od Alchajmerove bolesti.
Prisutnost genske varijacije označena je kao rizik od oboljevanja od Alchajmerove bolesti, a sam gen učestvuje u transportu holesterola.
Atkerinova je proučavala miševe kod kojih je genetskim inženjeringom kreiran efekat varijante ljudskog gena, a zatim im je ishrana bila bogata masnoćama, šećerom i holesterolom tokom devet meseci.
Obroci koje su miševi dobijali, bili su osmišljeni tako da po nutritivnoj strukturi budu što sličniji obrocima brze hrane.
Hemijske promene u mozgovima miševa ukazivale su na abnormalno taloženje tau proteina, dok je holesterol iz hrane uticao na smanjenje nivoa drugog proteina koji učestvuje u pamćenju, objasnila je Akterinova.
"Rezultati istraživanja dali su neke smernice prevencije ove bolesti", rekla je Atkerinova, ističući da su dodatna ispitivanja u toj oblasti neophodna.
http://www.rts.rs/page/stories/sr/story/14/Nauka/30366/Brza+hrana+i+Alchajmerova+bolest.html
Nedozvoljeno visok nivo dioksina ustanovljen je u tri od 11 testiranih stada goveda u Irskoj, ali ne postoji rizik po javno zdravlje, saopštio je ministar poljoprivrede te zemlje Brendan Smit.
Kontaminirane životinje će ipak biti isključene iz lanca ishrane, najavio je Smit na konferenciji za novinare, prenosi Rojters. Zvaničnik irske Uprave za bezbednost hrane Alan Rajli je izjavio da proizvodi od domaće govedine neće biti povučeni iz trgovine, kao što se desilo sa svinjskim mesom.
Nivo dioksina u svinjetini premašivao je 80 do 200 **** zakonski dozvoljeni nivo, dok je kod goveda legalni nivo premašen dva do tri puta, objasnio je Rajli.
On je rekao na konferenciji za novinare da bi dioksin te vrednosti trebalo dugotrajno da deluje na ljude da bi bio štetan, a u irskom slučaju reč je o "vrlo kratkoj izloženosti" ovoj kancerogenoj materiji.
U subotu je vlada Irske naložila da se iz prodavnica, restorana i pogona prehrambene industrije povuče sva svinjetina domaće proizvodnje, zbog zagađenosti dioksinom.
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DIOXIN
http://en.wikipedia.org/wiki/Dioxin
10,000 Chinese children still sick from milk
By GILLIAN WONG , Associated Press Writer, Medicine & Health / Diseases
A worker hand squeezes milk from a cow that recently receive antibiotic jabs to separate it from those to be used for human consumption at a milking station in near Hohhot, northwestern China's Inner Mongolia province, Tuesday, Oct. 7, 2008. China on Wednesday introduced standards for levels of the industrial chemical melamine permitted in milk and food products as it seeks to rein in a festering safety scare. (AP Photo/Ng Han Guan)
(AP) -- More than 10,000 children remained hospitalized after being sickened in China's tainted milk scandal, eight of whom were in serious condition, officials said
.............
MELAMIN
http://en.wikipedia.org/wiki/Melamine
Angel
Dec 10th, 2008 - 3:06 PM
Re: Zdravlje
Plastic Bottles Release Potentially Harmful Chemicals (Bisphenol A) After Contact With Hot Liquids
ScienceDaily (Feb. 4, 2008) — When it comes to Bisphenol A (BPA) exposure from polycarbonate plastic bottles, it's not whether the container is new or old but the liquid's temperature that has the most impact on how much BPA is released, according to University of Cincinnati (UC) scientists
Scott Belcher, PhD, and his team found when the same new and used polycarbonate drinking bottles were exposed to boiling hot water, BPA, an environmental estrogen, was released 55 times more rapidly than before exposure to hot water.
"Previous studies have shown that if you repeatedly scrub, dish-wash and boil polycarbonate baby bottles, they release BPA. That tells us that BPA can migrate from various polycarbonate plastics," explains Belcher, UC associate professor of pharmacology and cell biophysics and corresponding study author. "But we wanted to know if 'normal' use caused increased release from something that we all use, and to identify what was the most important factor that impacts release."
"Inspired by questions from the climbing community, we went directly to tests based on how consumers use these plastic water bottles and showed that the only big difference in exposure levels revolved around liquid temperature: Bottles used for up to nine years released the same amount of BPA as new bottles."
BPA is one of many man-made chemicals classified as endocrine disruptors, which alter the function of the endocrine system by mimicking the role of the body's natural hormones. Hormones are secreted through endocrine glands and serve different functions throughout the body.
The chemical--which is widely used in products such as reusable water bottles, food can linings, water pipes and dental sealants--has been shown to affect reproduction and brain development in animal studies.
"There is a large body of scientific evidence demonstrating the harmful effects of very small amounts of BPA in laboratory and animal studies, but little clinical evidence related to humans," explains Belcher. "There is a very strong suspicion in the scientific community, however, that this chemical has harmful effects on humans."
Belcher's team analyzed used polycarbonate water bottles from a local climbing gym and purchased new bottles of the same brand from an outdoor retail supplier.
All bottles were subjected to seven days of testing designed to simulate normal usage during backpacking, mountaineering and other outdoor adventure activities.
The UC researchers found that the amount of BPA released from new and used polycarbonate drinking bottles was the same -- both in quantity and speed of release -- into cool or temperate water.
However, drastically higher levels of BPA were released once the bottles were briefly exposed to boiling water.
"Compared to the rate of release from the same bottle, the speed of release was 15 to 55 times faster," explains Belcher.
Prior to boiling water exposure, the rate of release from individual bottles ranged from 0.2 to 0.8 nanograms per hour. After exposure, rates increased to 8 to 32 nanograms per hour.
Belcher stresses that it is still unclear what level of BPA is harmful to humans. He urges consumers to think about how cumulative environmental exposures might harm their health.
"BPA is just one of many estrogen-like chemicals people are exposed to, and scientists are still trying to figure out how these endocrine disruptors--including natural phyto-estrogens from soy which are often considered healthy--collectively impact human health," he says. "But a growing body of scientific evidence suggests it might be at the cost of your health."
The UC team reports its findings in the Jan. 30, 2008 issue of the journal Toxicology Letters. UC graduate student Hoa Le and summer undergraduate research fellows Emily Carlson and Jason Chua also participated in this study, which was funded by a National Institute of Environmental Health Sciences grant.
....................
http://www.sciencedaily.com/releases/2008/10/081002172257.htm
Six Environmental Research Studies Reveal Critical Health Risks From Plastic
ScienceDaily (Oct. 3, 2008) — Exposure to Bisphenol A (BPA), phthalates and flame retardants (PBDEs) are strongly associated with adverse health effects on humans and laboratory animals. A special section in the October 2008 issue of Environmental Research -- "A Plastic World" -- provides critical new research on environmental contaminants and adverse reproductive and behavioral effects.
Angel
Dec 10th, 2008 - 3:10 PM
Re: Zdravlje
http://www.sciencedaily.com/releases/2008/02/080207092824.htm
Babies Recently Treated With Lotion, Shampoo, And Powder More Likely To Have Phthalates Chemicals In Urine
ScienceDaily (Feb. 8, 2008) — Babies recently treated with infant personal care products such as lotion, shampoo, and powder, were more likely to have manmade chemicals called phthalates in their urine than other babies, according to University of Washington and Seattle Children's Hospital Research Institute study appearing in the February issue of the journal Pediatrics. Phthalates (pronounced "thah-lates") are added to many personal care and cosmetic products, as well many common household plastic and vinyl products, and some studies suggest they may affect reproductive development in humans.
Animal-based studies of phthalates have found that the synthetic chemicals can harm reproductive system development, and studies in humans have found that prenatal exposure or exposure through breast milk can alter hormone concentrations. Early-childhood exposure has not been extensively studied, so additional research is needed to determine if phthalate exposure can indeed cause reproductive development problems or other adverse effects in infants.
In this study, the researchers set out to see if use of personal care products was associated with urine phthalate concentrations. To accomplish this, they collected urine samples from 163 infants aged 2 months to 28 months, and measured the levels of nine different phthalates in those urine samples. They also had the babies' mothers fill out questionnaires on their use of infant personal care products in the past 24 hours.
When they cross-referenced the data, they found that the use of baby powder, lotion, and shampoo were each strongly associated with higher phthalate levels in the urine. The use of baby wipes and diaper cream were not strongly associated with increased levels of phthalates. The scientists also found that every baby had detectable levels of at least one phthalate in their urine, and about 81 percent of the infants had detectable levels of seven or more phthalates. Babies who were 8 months old or younger had stronger associations between product use and phthalate concentrations, as did babies whose mothers used more infant personal care products.
"We found that infant exposure to phthalates is widespread, and that exposure to personal care products applied onto the skin may be an important source," said the study's lead author, Sheela Sathyanarayana, an acting assistant professor of pediatrics at the UW School of Medicine and a researcher with Seattle Children's Hospital Research Institute. "This is troubling, because phthalate exposure in early childhood has been associated with altered hormone concentrations as well as increased allergies, runny nose, and eczema. Babies may be more at risk than children or adults because their reproductive, endocrine, and immune systems are still developing."
Parents who want to decrease their baby's exposure to phthalates should limit the amount of baby care products used on the infant, and apply lotions or powders only if medically indicated. Since phthalates are also found in many household plastic products, like plastic food containers, parents can also stop putting plastics in the microwave oven and use glass alternatives whenever possible. Phthalate-free cosmetics and personal care products are also available.
This research project was supported by grants from the U.S. Environmental Protection Agency, the National Institutes of Health, and the National Institute of Environmental Health Sciences. The project included researchers from the UW Departments of Occupational and Environmental Health Sciences, Pediatrics, and Biostatistics; the Seattle Children's Hospital Research Institute; the Centers for Disease Control and Prevention; and the University of Rochester School of Medicine and Dentistry.
Angel
Dec 10th, 2008 - 3:20 PM
Re: Zdravlje
Use Of Cleaning Products During Pregnancy Increases Risk Of Asthma In Young Children
ScienceDaily (Aug. 7, 2008) — Women who use a lot of household cleaning products when they are pregnant, or shortly after giving birth, are increasing their child’s risk of developing asthma. That’s according to the Avon Longitudinal Study of Parents of Children (ALSPAC, also known as Children of the Nineties), that recruited over 13,000 children from before birth and has followed them to post 16.
http://www.sciencedaily.com/releases/2008/08/080806154716.htm
Nephilia
Dec 10th, 2008 - 3:55 PM
Re: Zdravlje
http://www.porodicnilekar.net/index.php?option=com_content&view=article&id=257:mleko-krivac-za-deji-dijabetes&catid=50:zdravlje-dece&Itemid=54
Kravlje mleko – krivac za dečji dijabetes?
Mleko kao hrana – da ili ne?
Autor: Prof. dr Valter Fajt
http://www.vojvodinacafe.com/forum/zdravlje-i-lepota/4325-mleko-kao-hrana-da-ili-ne.html
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