A study of 527 Japanese municipal employees found that in November, people whose serum vitamin D fell in the highest quartile were 49 percent less likely to report depressive symptoms, with the strongest link for severe depression. No association appeared for July.
Section archive
Page 39 of 41
Vitamins
Research on vitamins A through K, deficiencies and supplementation.
- All desks
- Abortion
- Accutane
- Acetaminophen
- Acid Reflux
- Acidic Foods
- Acne
- Acrylamide
- Acupuncture
- Additives
- ADHD
- Adiposity
- Advisories
- Aerobic Exercise
- Aflatoxin
- Agave
- Agent Orange
- Aging
- Agriculture
- AIDS
- Air Pollution
- Airline Passengers
- Airport
- ALA
- Alcohol
- Alcoholic Beverage
- Alerts
- Allergy
- Alli
- Aloe Vera
- ALS
- Alternative Medicine
- Aluminum
- Alzheimer's
- Amalgam
- AMD
- Ampyra
- Amygdala
- Anal Cancer
- And
- Anemia
- Angiogenesis
- Animal Protein
- Animals
- Anorexia
- Anthocyanins
- Anthrax
- Anti-Angiogenesis
- Anti-Obesity
- Antibacterial
- Antibiotic
Vitamins
Vitamin D and schizophrenia
A reader asks Dr. Cannell whether vitamin D would help her imprisoned son's schizophrenia, and he replies that in his hospital experience it does not reduce hallucinations, paranoia or psychosis but may improve mood, reduce tremors and help prevent antipsychotic side effects.
Vitamins
How to use vitamin D to fight swine flu
John Cannell notes an Emory meta-analysis of randomized trials concluding there is enough evidence to justify further research on vitamin D for treating infections. He advises keeping 50,000 IU capsules on hand for winter, while conceding no trial shows high doses help against flu.
Vitamins
Vitamin D helps prevent HIV transmission from mother to child
In a Harvard study of 884 HIV-infected pregnant women in Tanzania, infants of mothers with low vitamin D were 1.5 times more likely to acquire HIV during birth and twice as likely through breastfeeding by six weeks. By 24 months they were 61 percent more likely to have died.
Vitamins
Vitamin D may help prevent swine flu
The Globe and Mail reported that the Public Health Agency of Canada intends to test vitamin D levels in people who contract H1N1 and see whether serum levels track with severity. The piece reprints Dr. John Cannell's argument that flu season coincides with vitamin D deficiency season.
Vitamins
Low levels of blood choline means high risk for neural tube defects
Comparing blood from 80 women who bore children with anencephaly or spina bifida to 409 who did not, Stanford researchers found women with the lowest choline levels were 2.4 times more likely to have a child with a neural tube defect. The highest levels carried the lowest risk.
Vitamins
Vitamin D Theory of Autism
John Cannell of the Vitamin D Council sets out his theory that vitamin D deficiency during pregnancy or childhood causes autism, arguing it fits identical-twin concordance, the rise in cases alongside sun avoidance, the male predominance and higher rates among blacks.
Vitamins
Millions of US children low in vitamin D (press release)
Analyzing NHANES data on more than 6,000 children aged 1 to 21, Albert Einstein researchers found 9 percent, about 7.6 million, vitamin D deficient and another 61 percent insufficient. They say this raises the children's risk of bone disease and heart disease risk factors.
Vitamins
Sunlight exposure may lower prostate cancer risk
A review of 1,020 PSA-detected prostate cancer cases and 5,044 matched controls found evidence that greater sun exposure may lower prostate cancer risk, though the findings on skin type, burning and time spent outdoors pointed in mixed directions.
Vitamins
Vitamin D fights pancreatic cancer
Taiwanese researchers report that the vitamin D analog 19-nor-1alpha,25(OH)2D2 inhibited pancreatic tumor growth in vitro and in vivo by up-regulating the p21 and p27 tumor suppressor genes. Analogs aim to deliver the effect with fewer side effects than the most active form of the vitamin.
Vitamins
Study confirms that Vitamin D3 may prevent cancer
Spanish researchers reported in the Journal of Clinical Investigation that the active form of vitamin D3 switches on CST5, the gene for the tumor suppressor protein cystatin D. They conclude CST5 may mediate the vitamin's anticancer effect and deserves study in colon cancer.
Vitamins
Dietary folate does not reduce risk of pancreatic cancer
Following 120,852 Dutch adults for 13.3 years, researchers found those with the highest dietary folate intake ran a 37 percent higher risk of pancreatic cancer than those with the lowest, and found no link for individual folate vitamers.
Vitamins
Low vitamin D may raise metabolic syndrome risk
A study in Diabetes Care of 3,262 Chinese adults aged 50 to 70 found insufficient or deficient vitamin D was associated with a 52 percent higher risk of metabolic syndrome. Ninety-four percent of participants had low vitamin D, and 42 percent of those had metabolic syndrome.
Vitamins
Prenatal multivitamins reduce risk of low birth weight
A CMAJ meta-analysis of 13 studies found prenatal multivitamins were associated with a 17 to 19 percent lower risk of low birth weight than iron-folic acid alone, and with 54 grams more birth weight, which researchers say could avoid 1.5 million cases a year.
Vitamins
Vitamin K: Help for Those with CAC
A Tufts study of 388 people with coronary artery calcification found those given vitamin K1 averaged 6 percent less calcification than those who did not take it. Vitamin K activates matrix GLA protein, which regulates calcium build-up in blood vessels.
Vitamins
Vitamin D: A “Legal” Performance Enhancing Substance?
Citing an American College of Sports Medicine statement, the article reports that activated vitamin D acts as a hormone regulating over 1,000 genes, including in muscle and nerve, and that studies since the 1950s tie musculoskeletal performance to vitamin D levels, peaking with summer sun.
Vitamins
High vitamin D linked to better cognitive function in old people
A Manchester study of 3,000 European men found those with more vitamin D in their blood did better on cognitive and social tests, with results published in the Journal of Neurology, Neurosurgery and Psychiatry. An earlier study of 900 people tied higher levels to better physical performance.
Vitamins
Vitamin K helps strengthen bones
A Nutrition Research review of seven trials in postmenopausal women found high doses of vitamins K1 and K2 raised bone mineral density only moderately yet reduced clinical fractures. Women took 200 micrograms to 5 milligrams of K1 daily, or 45 milligrams of K2, for two years or more.
727 stories