Friday, 19 October 2018    HomeAbout UsContact Us    

You are here: Home Nutrition

Higher Plasma Vitamin C Levels Reduce Risk Of Developing Type 2 Diabetes
Posted by HealthyMuslim, in Nutrition
Topics: Vitamin C Type 2 Diabetes

  Mail To Friend    Printer Friendly Bookmark and Share

This is a paper published in the Archives of Internal medicine. In summary, it establishes that a higher fruit intake (leading to an increased plasma Vitamin C level) leads to a significant reduction in the risk of type 2 diabetes.

Now, not all fruit (and veg) is equal. Your standard supermarket fruit is often not superior quality. It probably travels thousands of miles before getting to you, and may not be high in nutrients. Often, the fruit is picked before it is ripe, and is left for weeks if not months. The fruit you are buying from supermarkets can often be many months old. The Vitamin C content of supermarket fruit and vegetables is much lower than fresh fruit.

Try to get organic, locally grown produce where you can. For a list of fruits and vegetables with good Vitamin C content, see further below.

You can see the paper published online:

Plasma Vitamin C level, fruit and vegetable consumption, and the risk of new-onset type 2 diabetes mellitus: the European prospective investigation of cancer--Norfolk prospective study
By Harding AH, Wareham NJ, Bingham SA, Khaw K, Luben R, Welch A, Forouhi NG.

Medical Research Council Epidemiology Unit, Institute of Metabolic Science, Addenbrooke's Hospital, PO Box 285, Hills Road, Cambridge CB2 0QQ, England.

BACKGROUND: Epidemiologic studies suggest that greater consumption of fruit and vegetables may decrease the risk of diabetes mellitus, but the evidence is limited and inconclusive. Plasma Vitamin C level is a good biomarker of fruit and vegetable intake, but, to our knowledge, no prospective studies have examined its association with diabetes risk. This study aims to examine whether fruit and vegetable intake and plasma Vitamin C level are associated with the risk of incident type 2 diabetes. METHODS: We administered a semiquantitative food frequency questionnaire to men and women from a population-based prospective cohort (European Prospective Investigation of Cancer-Norfolk) study who were aged 40 to 75 years at baseline (1993-1997) when plasma Vitamin C level was determined and habitual intake of fruit and vegetables was assessed. During 12 years of follow-up between February 1993 and the end of December 2005, 735 clinically incident cases of diabetes were identified among 21 831 healthy individuals. We report the odds ratios of diabetes associated with sex-specific quintiles of fruit and vegetable intake and of plasma Vitamin C levels.

RESULTS: A strong inverse association was found between plasma Vitamin C level and diabetes risk. The odds ratio of diabetes in the top quintile of plasma Vitamin C was 0.38 (95% confidence interval, 0.28-0.52) in a model adjusted for demographic, lifestyle, and anthropometric variables. In a similarly adjusted model, the odds ratio of diabetes in the top quintile of fruit and vegetable consumption was 0.78 (95% confidence interval, 0.60-1.00).

CONCLUSIONS: Higher plasma Vitamin C level and, to a lesser degree, fruit and vegetable intake were associated with a substantially decreased risk of diabetes. Our findings highlight a potentially important public health message on the benefits of a diet rich in fruit and vegetables for the prevention of diabetes.

Commentary from Dr. Thomas Levy MD:

This study is especially impressive since it utilizes plasma Vitamin C measurements in making its evaluation of the incidence of diabetes mellitus in a test population. Trying to evaluate by questionnaire how much fruit and vegetables have been consumed is imprecise at best. As well, different digestive tracts have variable degrees of efficiency in the amount of nutrition absorbed and assimilated. However, in looking at the relation between plasma Vitamin C levels and the likelihood of having diabetes mellitus the data makes a compelling case.

However, even with the imprecision inherent in evaluating fruit and vegetable intake, it was found that women and men who had the highest intake had a 22% reduction in their risk of developing type 2 diabetes. The upper 20% of women consumed 58% more fruits and vegetables than the bottom 20%, and the upper 20% of men consumed 43% more than the bottom 20%.

When looking at plasma (blood sample) Vitamin C levels, the data was even more compelling. Men and women with the highest Vitamin C levels had a 62% reduction in their risk of developing type 2 diabetes over those subjects with the lowest Vitamin C levels. The study was sizeable, following 21,831 men and women over a 12-year period.

Vitamin C and glucose are interrelated in a number of important ways. Vitamin C is involved in regulating insulin metabolism in the pancreas. Also, Vitamin C, in animals that have the capability (not man), utilize glucose as the substrate for a four sequential enzyme process in the liver resulting in Vitamin C. This utilization of glucose by animals in Vitamin C synthesis is one important reason why diabetes is not a chronic disease that one sees to any significant degree in wild animals. Finally, sufficient Vitamin C intake can reflexly stimulate insulin release, pushing both available glucose and Vitamin C inside the cells. When Vitamin C levels are low, it is logical that glucose metabolism will become chronically impaired, and if it is impaired severely enough and long enough, diabetes will be the logical outcome.

Fruits and vegetables High in Vitamin C Content


  • Kiwi
  • Strawberry
  • Orange
  • Blackberries
  • Cantaloupe
  • Watermelon
  • Tomatoes
  • Lime
  • Peach
  • Bananas
  • Apples
  • Lemon
  • grapes


  • Artichoke
  • Asparagus
  • Avocado
  • Broccoli
  • Carrots
  • Cauliflower
  • Corn
  • Cucumber
  • Green Pepper
  • Kale
  • Lima Beans
  • Mushrooms
  • Onions
  • Peas
  • Potatoes
  • Spinach
  • Squash
  • sweet potato

Link to this article:   Show: HTML LinkFull LinkShort Link
Share or Bookmark this page: You will need to have an account with the selected service in order to post links or bookmark this page.

Subscribe via RSS or email:
Follow us through RSS or email. Click the RSS icon to subscribe to our feed.


Related Articles:
Add a Comment
You must be registered and logged in to comment.

Visit Vaccines.Me for information and education on vaccination.

Latest Articles
Some Notes of Advice on Health, Disease and 'Medicine'
Cooking With Vegetable Oils Releases Toxic Cancer-Causing Chemicals, Say Experts
Cancer Simplified: Part 5 - The Initiators and Promoters of Cancer
Cancer Simplified: Part 4 - The Immune System's In-Built Anti-Cancer Mechanism
Cancer Simplified: Part 3 - Cancer Is Simply a Failure of the Immune System
Cancer Simplified: Part 2 - An Analogy for Different Perceptions About Treatment of Cancer
Cancer Simplified: Part 1 - What Is Cancer and How Does It Develop?
Honey and Anti-Biotic Resistance: A New Approach!
On the Rejection of Hijaamah by the Physicians (Shaykh Muhammad Bin Ibraaheem Aal Al-Shaykh)
How to Limit Efffects of Bisphenol-A Upon Children

No pages found.

Most Popular
Garlic, Honey and Apple Cider Vinegar: Must Have Excellent Home Remedy
How To Eat Fruit Properly
Rocket: A Spicy Salad Leaf With Potent Health Benefits
Ibn al-Qayyim: Henna Has Many Benefits from Treating Headaches to Burns
Talbina: Relaxation For the Heart of the Sick Person
Why We Need Protein in our Diets
Five Superfoods You Should Be Eating Everyday
Deodorant And Anti-Perspirant Dangers - Do You Know What You're Putting Under Your Armpits?
The Different Kinds Of Exercises Your Body Needs
What Foods Are Good For Your Eyesight?

Archives (View more)
2016 • January
2015 • November
2014 • March
2014 • February
2013 • October
2012 • October
2012 • August
2012 • January
2011 • December
2011 • November
2011 • October
2011 • September

Copyright © 2018 . All rights reserved. RSSTagsPrivacyLegal and Terms of Use Learn to Speak Arabic