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Vitamin B May Not Guard Against Second Stroke, Heart Attack
Posted 5 Aug 2010 by Drugs.com
TUESDAY, Aug. 3 – Stroke patients who take vitamin B supplements to lower their homocysteine levels may not be protected from second strokes or heart attacks, a new study finds. Earlier studies found an association between homocysteine, an amino acid, in the blood, and an increased risk for stroke and heart attack. Vitamin B supplements lower homocysteine levels, but whether this really has an effect on stroke and heart attack risk has been unclear, the Australian researchers noted. "B vitamins are safe, but they were not, statistically, significantly more effective than placebo in preventing major vascular events among stroke and TIA [transient ischemic attack] patients," said lead researcher Dr. Graeme J. Hankey, head of the stroke unit at Royal Perth Hospital in Western Australia. "B vitamins have not been proven to have a role in secondary stroke prevention." The report is ... Read more
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More Evidence That B Vitamins Alone Won't Counter Heart Risks
Posted 22 Jun 2010 by Drugs.com
TUESDAY, June 22 – A new study by British researchers provides the most conclusive evidence to date that taking vitamins to reduce levels of the blood protein known as homocysteine doesn't lower the risk of heart problems. Homocysteine has been a buzzword among heart disease experts since the early 1990s when scientists noticed that people with elevated levels had an increased risk of heart disease. Because folic acid and other B vitamins are known to lower homocysteine, researchers theorized that taking a daily supplement might lead to heart-related benefits. The study of more than 12,000 heart attack survivors showed that taking a daily folic acid and vitamin B12 supplement for nearly seven years lowered homocysteine levels by an average of 28 percent, but failed to reduce the risk of heart attack, coronary death or stroke. Seven previous large-scale trials that looked at whether ... Read more
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Vitamin B12 Deficiency, Pernicious Anemia, B12 Nutritional Deficiency, Schilling Test