Mostrando postagens com marcador Vitamins. Mostrar todas as postagens
Mostrando postagens com marcador Vitamins. Mostrar todas as postagens

sexta-feira, 17 de julho de 2015

21 Important Facts About Vitamin B12 Deficiency

 

 

You can eat a ton of veggies and still not get enough vitamin B12. Here are the risks, symptoms, and ways to treat a deficiency.

b12 vitamin

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The energy vitamin

by Esther Crain

Vitamin B12 is a powerhouse. It helps make DNA, nerve and blood cells, and is crucial for a healthy brain and immune system. Your metabolism wouldn't run smoothly without it. But B12 isn't like other vitamins. It's only found in animal products like eggs, meat, shellfish, and dairy. Up to 15% of people don't get enough B12, and they're more likely to be vegetarians, have celiac disease or other digestion problems, or be an adult over 50. The signs of vitamin B12 deficiency include exhaustion, rapid heartbeat, brain fog, and other symptoms, says Maggie Moon, RD, a Los Angeles–based nutritionist and owner of Everyday Healthy Eating. Read on to find out more about the causes, symptoms, and cures for a vitamin B12 deficiency.

Next: Vegetarians and vegans are at risk

terça-feira, 7 de julho de 2015

Vitamin C related to reduced risk of cardiovascular disease, early death

 

 

New research from the University of Copenhagen and Herlev and Gentofte Hospital shows that high vitamin C concentrations in the blood from the intake of fruit and vegetables are associated with a reduced risk of cardiovascular disease and early death.

The study, which has just been published in the well known American Journal of Clinical Nutrition, is based on the Copenhagen General Population Study.

As part of the study, the researchers had access to data about 100,000 Danes and their intake of fruit and vegetables as well as their DNA. "We can see that those with the highest intake of fruit and vegetables have a 15% lower risk of developing cardiovascular disease and a 20% lower risk of early death compared with those who very rarely eat fruit and vegetables. At the same time, we can see that the reduced risk is related to high vitamin C concentrations in the blood from the fruit and vegetables," says Camilla Kobylecki, a medical doctor and PhD student at the Department of Clinical Biochemistry, Herlev and Gentofte Hospital.

Vitamin C from food rather than supplements

Among other things, vitamin C helps build connective tissue which supports and connects different types of tissues and organs in the body. Vitamin C is also a potent antioxidant which protects cells and biological molecules from the damage which causes many diseases, including cardiovascular disease. The human body is not able to produce vitamin C, which means that we must get the vitamin from our diet.

"We know that fruit and vegetables are healthy, but now our research is pinpointing more precisely why this is so. Eating a lot of fruit and vegetables is a natural way of increasing vitamin C blood levels, which in the long term may contribute to reducing the risk of cardiovascular disease and early death. You can get vitamin C supplements, but it is a good idea to get your vitamin C by eating a healthy diet, which will at the same time help you to develop a healthier lifestyle in the long term, for the general benefit of your health," says Boerge Nordestgaard, a clinical professor at the Faculty of Health and Medical Sciences, University of Copenhagen, and a consultant at Herlev and Gentofte Hospital.

The researchers are now continuing their work to determine which other factors, combined with vitamin C, have an impact on cardiovascular disease and death.


Story Source:

The above post is reprinted from materials provided by University of Copenhagen The Faculty of Health and Medical Sciences. Note: Materials may be edited for content and length.


segunda-feira, 11 de maio de 2015

Too much vitamin C: Is it harmful?

 

 

Answers from Katherine Zeratsky, R.D., L.D.

Vitamin C (ascorbic acid) is an essential nutrient. Still, it's possible to have too much vitamin C.

Vitamin C is a water-soluble vitamin that supports normal growth and development. Vitamin C also helps your body absorb iron. Because your body doesn't produce or store vitamin C, it's important to include vitamin C in your diet.

For most people, a large orange or a cup of strawberries, chopped red pepper or broccoli provide enough vitamin C for the day. Any extra vitamin C will simply be flushed out of your body in your urine.

For adults, the recommended dietary reference intake for vitamin C is 65 to 90 milligrams (mg) a day, and the upper limit is 2,000 mg a day. Although too much dietary vitamin C is unlikely to be harmful, megadoses of vitamin C supplements may cause:

  • Diarrhea
  • Nausea
  • Vomiting
  • Heartburn
  • Abdominal bloating and cramps
  • Headache
  • Insomnia
  • Kidney stones

Remember, for most people, a healthy diet provides an adequate amount of vitamin C.

Feb. 05, 2015

References
  1. Vitamin C (ascorbic acid). Natural Medicines Comprehensive Database. http://www.naturaldatabase.com. Accessed Dec. 29, 2014.
  2. Pazirandeh S, et al. Overview of water-soluble vitamins. http://www.uptodate.com/home. Accessed Dec. 29, 2014.
  3. Vitamin C. Office of Dietary Supplements. http://ods.od.nih.gov/factsheets/VitaminC-HealthProfessional. Accessed Dec. 29, 2014.

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