{"id":105625,"date":"2026-08-08T02:24:33","date_gmt":"2026-08-08T06:24:33","guid":{"rendered":"https:\/\/www.adviews.info\/news\/?p=105625"},"modified":"2026-08-08T02:24:33","modified_gmt":"2026-08-08T06:24:33","slug":"vitamin-c-may-fight-cancer-but-not-the-way-scientists-once-thought","status":"publish","type":"post","link":"https:\/\/www.adviews.info\/news\/?p=105625","title":{"rendered":"Vitamin C may fight cancer \u2014 but not the way scientists once thought"},"content":{"rendered":"<p>Half a century on, the story looks more complicated. Pauling was  wrong in important ways, but he was not entirely wrong. Modern research  is giving vitamin C  a second look in cancer, and it turns out that under certain conditions  it can behave less like a gentle vitamin and more like a drug.<\/p>\n<p>Pauling\u2019s vitamin C story began in the 1970s, when he teamed up with  the Scottish doctor Ewan Cameron and gave patients with advanced,  incurable cancer very large amounts of vitamin C  \u2013 first as a drip into a vein, then as tablets. Compared with similar  patients who did not get vitamin C, they reported that the  vitamin\u2011treated group lived longer and felt better. For some, they  suggested, survival could be several times longer.<\/p>\n<p>Two large trials, run by the Mayo Clinic, a leading non-profit medical center in the US, then put this to the test. The results were clear: there was no benefit.<\/p>\n<p>Patients who took vitamin C pills lived no longer than those who  didn\u2019t. For most oncologists, that was the end of the matter. Vitamin C  was filed away with other \u201calternative\u201d remedies, and Pauling\u2019s  late-career crusade was widely seen as a sad mistake.<\/p>\n<p>What neither trial\u2019s critics nor defenders noticed at the time:  Pauling and Cameron had started with vitamin C into a vein; the Mayo  Clinic trials used tablets only. That matters because the gut can only  absorb so much vitamin C. Once you reach a modest daily dose, the body  simply stops taking in much more. Swallow as many tablets as you like,  and the level of vitamin C in your blood levels off.<\/p>\n<p>By contrast, a drip into a vein  can raise blood levels to tens or even hundreds of times higher than  tablets ever could. At those extreme levels, vitamin C starts to behave differently inside the body.<\/p>\n<p>At everyday levels, vitamin C acts as an antioxidant: it mops up harmful molecules and protects our cells. At very high levels, especially around tumors, it can flip roles.<\/p>\n<p>In laboratory studies, high-dose vitamin C helps generate hydrogen  peroxide, a reactive substance that can damage cells. Cancer cells seem  especially vulnerable because they are already under stress. They grow  rapidly, often in areas with poor blood supply, and produce lots of  reactive molecules of their own. Their internal \u201ccleanup\u201d systems are  stretched thin.<\/p>\n<p>Add a sudden pulse of hydrogen peroxide and many cancer cells tip over the edge: their DNA and energy machinery are damaged and they die.  Normal cells, which are under less strain and have better defenses, are  more likely to survive. In this way, very high doses of vitamin C  behave less like a daily supplement and more like a weak, selective  chemotherapy drug. Crucially, the doses needed for this effect cannot be reached with tablets.<\/p>\n<h2>What the latest evidence shows<\/h2>\n<p>In people, the evidence is still early and mixed. Small trials have  given high-dose vitamin C through a vein to patients with hard-to-treat cancers such as ovarian, pancreatic or brain  tumors. So far, many patients can receive large doses several times a  week without serious side-effects. Problems can occur, especially in  people with poor kidney function or rare inherited conditions, which is  why this is not a harmless wellness drip to be sold on the high street.<\/p>\n<p>A few studies suggest that adding vitamin C infusions to chemotherapy may help some patients live a little longer or help with side-effects, but other studies show no clear benefit. The trials are small and varied, so we cannot draw firm conclusions.<\/p>\n<p>One consistent signal is quality of life: patients given vitamin C  alongside chemotherapy often report less fatigue, less pain and fewer  side-effects, such as nausea. For someone with advanced cancer, that  matters, even if it is not the sweeping cure Pauling once promised.<\/p>\n<p>Lab work also hints at subtler roles. Vitamin C is involved in enzymes  that influence how our DNA is \u201cmarked\u201d and read, and in how cells  divide and respond to low oxygen \u2013 important in cancer behavior.<\/p>\n<p>In some experiments, high vitamin C levels make cancer cells grow less aggressively and make them more sensitive to treatment. There are even early suggestions that vitamin C may help the immune system recognize and attack tumors, though this remains speculative.<\/p>\n<h2>Partly right<\/h2>\n<p>So, was Pauling right after all? The fairest answer is that he was  partly right, for reasons he did not fully understand, and he  exaggerated the promise. He was wrong to promote vitamin C tablets as a  powerful cure for cancer. Large, careful trials have not found that  swallowing high-dose vitamin C helps people with established cancer live  longer. He was also wrong to present vitamin C as a near-universal  remedy for many illnesses.<\/p>\n<p>But he was not entirely wrong to suspect that vitamin C might have a  special role in cancer treatment. He sensed, long before we could prove  it, that very high doses given into a vein would behave quite  differently from ordinary supplements.<\/p>\n<p>Modern research has confirmed that intravenous vitamin C reaches much  higher levels in the blood and has distinct biological effects. What we  do not yet have are large, definitive randomized trials showing that high-dose intravenous vitamin C  clearly prolongs life for most cancer patients. Until we do, it should  be seen as experimental \u2013 promising enough to study, but not proven  enough to replace standard therapies. Any use belongs in clinical trials  or in carefully supervised medical settings, not in clinics selling  expensive \u201cimmune boosts.\u201d<\/p>\n<p>The \u201cvitamins in cancer\u201d story continues to evolve. If the story of vitamin C  and cancer teaches us anything, it is that science rarely moves in  straight lines. A bold idea, some flawed early studies, a fierce  backlash \u2013 and then, years later, a quieter, more careful return to the  question.<\/p>\n<p>Pauling may never be fully vindicated, but neither was he simply  deluded. In his enthusiasm, he may have glimpsed a sliver of truth long  before the rest of us knew how to look for it.<img loading=\"lazy\" src=\"https:\/\/www.adviews.info\/news\/wp-content\/plugins\/RSSPoster_PRO\/cache\/b45d4_count.gif\" alt=\"The Conversation\" width=\"1\" height=\"1\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Half a century on, the story looks more complicated. Pauling was wrong in important ways, but he was not entirely wrong. Modern research is giving vitamin C a second look in cancer, and it turns out that under certain conditions it can behave less like a gentle vitamin and more like a drug. Pauling\u2019s vitamin [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"_links":{"self":[{"href":"https:\/\/www.adviews.info\/news\/index.php?rest_route=\/wp\/v2\/posts\/105625"}],"collection":[{"href":"https:\/\/www.adviews.info\/news\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.adviews.info\/news\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.adviews.info\/news\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.adviews.info\/news\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=105625"}],"version-history":[{"count":0,"href":"https:\/\/www.adviews.info\/news\/index.php?rest_route=\/wp\/v2\/posts\/105625\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.adviews.info\/news\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=105625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.adviews.info\/news\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=105625"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.adviews.info\/news\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=105625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}