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Subject: Wybory w USA 2016
Poprosze te badania. Bardzo interesujace.
dziecko jestes i nei umiesz korzystac z wyszukiwarki? proszę
Research
In the past 40 years, numerous epidemiological and placebo-controlled trials have examined the effect of vitamin C supplementation on the prevention and treatment of colds. More than 30 clinical trials with over 10,000 participants have examined the effects of taking daily vitamin C in doses up to 2 g/day. The majority of studies of non-athletic people, when looked at collectively, led researchers to conclude that vitamin C does not prevent or treat the common cold, but highly physically active people training in stressful conditions (e.g. soldiers training in the Arctic) may benefit from supplementation.[1][2] A 2009 literature review concluded that vitamin C consumption may decrease the duration of cold symptoms in some populations, but does not prevent a cold or affect symptom severity.[6]
A 2013 Cochrane systematic review of placebo-controlled trials using vitamin C doses of at least 200 mg/day found that routine vitamin C supplementation did not prevent colds in the general population, but halved the common cold risk in people exposed to short periods of extreme physical stress, shortened colds by 8 percent in adults and up to 18 percent in children, and reduced severity of symptoms. Only seven clinical trials tested vitamin C as a treatment after the onset of cold symptoms, and three of those trials showed a benefit, but considering the benefits of routine vitamin C supplementation, the review concludes, "it may be worthwhile for common cold patients to test on an individual basis whether therapeutic vitamin C is beneficial for them."[2]
A systematic review of vitamin C for cold-induced asthma found three relevant studies, all of which found benefits from the administration of vitamin C, either against asthma attacks or against bronchial hypersensitivity that is a characteristic of asthma.[7]
inne
In a July 2007 study, researchers wanted to discover whether taking 200 milligrams or more of vitamin C daily could reduce the frequency, duration, or severity of a cold. After reviewing 60 years of clinical research, they found that when taken after a cold starts, vitamin C supplements do not make a cold shorter or less severe. When taken daily, vitamin C very slightly shorted cold duration -- by 8% in adults and by 14% in children.
So what does all this mean?
According to this research, the average adult who suffers with a cold for 12 days a year would still suffer for about 11 days a year if that person took a high dose of vitamin C every day during that year.
For the average child who suffers about 28 days of cold illness a year, taking daily high-dose vitamin C would still likely mean about 24 days of cold illness.
When vitamin C was tested for treatment of colds in 7 separate studies, it was found to be no more effective than placebo at shortening the duration of cold symptoms.
http://www.webmd.com/cold-and-flu/cold-guide/vitamin-c-for-common-cold
http://www.ncbi.nlm.nih.gov/pubmed/10796569
(edited)
dziecko jestes i nei umiesz korzystac z wyszukiwarki? proszę
Research
In the past 40 years, numerous epidemiological and placebo-controlled trials have examined the effect of vitamin C supplementation on the prevention and treatment of colds. More than 30 clinical trials with over 10,000 participants have examined the effects of taking daily vitamin C in doses up to 2 g/day. The majority of studies of non-athletic people, when looked at collectively, led researchers to conclude that vitamin C does not prevent or treat the common cold, but highly physically active people training in stressful conditions (e.g. soldiers training in the Arctic) may benefit from supplementation.[1][2] A 2009 literature review concluded that vitamin C consumption may decrease the duration of cold symptoms in some populations, but does not prevent a cold or affect symptom severity.[6]
A 2013 Cochrane systematic review of placebo-controlled trials using vitamin C doses of at least 200 mg/day found that routine vitamin C supplementation did not prevent colds in the general population, but halved the common cold risk in people exposed to short periods of extreme physical stress, shortened colds by 8 percent in adults and up to 18 percent in children, and reduced severity of symptoms. Only seven clinical trials tested vitamin C as a treatment after the onset of cold symptoms, and three of those trials showed a benefit, but considering the benefits of routine vitamin C supplementation, the review concludes, "it may be worthwhile for common cold patients to test on an individual basis whether therapeutic vitamin C is beneficial for them."[2]
A systematic review of vitamin C for cold-induced asthma found three relevant studies, all of which found benefits from the administration of vitamin C, either against asthma attacks or against bronchial hypersensitivity that is a characteristic of asthma.[7]
inne
In a July 2007 study, researchers wanted to discover whether taking 200 milligrams or more of vitamin C daily could reduce the frequency, duration, or severity of a cold. After reviewing 60 years of clinical research, they found that when taken after a cold starts, vitamin C supplements do not make a cold shorter or less severe. When taken daily, vitamin C very slightly shorted cold duration -- by 8% in adults and by 14% in children.
So what does all this mean?
According to this research, the average adult who suffers with a cold for 12 days a year would still suffer for about 11 days a year if that person took a high dose of vitamin C every day during that year.
For the average child who suffers about 28 days of cold illness a year, taking daily high-dose vitamin C would still likely mean about 24 days of cold illness.
When vitamin C was tested for treatment of colds in 7 separate studies, it was found to be no more effective than placebo at shortening the duration of cold symptoms.
http://www.webmd.com/cold-and-flu/cold-guide/vitamin-c-for-common-cold
http://www.ncbi.nlm.nih.gov/pubmed/10796569
(edited)
btw poznałem ostatnio dwóch obywateli USA, którzy wyemigrowali do Polski i bardziej im się tutaj podoba niż w ojczyźnie :P. Jeden z Oregonu, drugi z Kalifornii :P (moi klienci).
to ze ktos sie wyniosl z USA wiele nie mowi
to tak jakbys napisal, ze ktos z Europy emigrowal do Meksyku i mu sie bardziej podoba:P
to tak jakbys napisal, ze ktos z Europy emigrowal do Meksyku i mu sie bardziej podoba:P
Nie porównuj Polski do Meksyku :-P Polska to bardzo normalny kraj, w którym jak masz trochę wiecej grosza można naprawdę fajnie żyć :P. Możliwe, że mają jakieś pieniądze po rodzicach, które w USA byłyby przeciętne a tutaj są majątkiem, byli/są polskiego pochodzenia (nadal obywatele USA) i doszli do wniosku, że fajnie można sobie pożyć na wysokim poziomie z takimi pieniędzmi w Polsce niż przeciętnie żyć i pracować w USA :p.
nie zrozumiałeś o co mi chodzi
napisałeś, że przenieśli się z USA - ale to wiele nie mówi, bo to ogromny kraj, są miejsca gdzie się super żyje, są takie że człowieka raz na tydzień widzisz:P
napisałeś, że przenieśli się z USA - ale to wiele nie mówi, bo to ogromny kraj, są miejsca gdzie się super żyje, są takie że człowieka raz na tydzień widzisz:P
Sobie w dupe te badania wsadz. Witamina C pomoga ukladowi odpornosciowemu w czasie przeziebienia. Suplementacja powinna byc jak najwyzsza mozliwa dla kazdego organizmu. Proponuje samemu sprobowac a nie chlanac wiedze z takich badan
Co do witaminy C to są badania, które zalecają spożywanie od 4 do 15 gramów dziennie. Przy ciężkich przeziębieniach czy nawet rakowych sprawach mówi się nawet o 200 gramach dziennie. Witamina C nie szkodzi, najwyżej można mieć biegunkę.
Dokladnie trzeba jej zarzywac dużo nie tak jak w tych badaniach. Kazdy powinien sam swoje limity ustawiać. Bardzo dobrze tez działa woda utleniona wlewana w uszy w bardzo wczesnym przeziebieniu.
witamina C powoduje raka i to jest fakt, poczytajcie badania
Sobie w dupe te badania wsadz.
Jak zwykle świetna argumentacja xd
Jak zwykle świetna argumentacja xd
akurat badan podwazajacych efektywnosc witaminy c jest od cholery
tzn. przyznaja one, ze faktycznie moze pomagac, ale przyjmowana w BARDZO duzych dawkach, a nie po 3-4 gownotabletki
tzn. przyznaja one, ze faktycznie moze pomagac, ale przyjmowana w BARDZO duzych dawkach, a nie po 3-4 gownotabletki
to nie bierz i nie bedzie mial tego raka ...
Sam sobie zbadaj na swoich literkach czy wit C ci pomaga czy nie.
Atam bardzo dużych. Dużych w porównaniu z norma to tak, ale jak ta norma została ustanowiona? Aby nie doprowadzić do szkorbutu - żart ta norma.
3-4 gownotabletki? Nom gówno pomogą zgodnie z badaniami.
3-4 gownotabletki? Nom gówno pomogą zgodnie z badaniami.
Nie biore i nie mam raka. Hipoteza udowodniona, nie jestes w stanie jej obalić.