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Micronutrients prevent cancer and delay aging.

B N Ames1

  • 1University of California, Berkeley 94720-3202, USA. bnames@uclink4.berkeley.edu

Toxicology Letters
|February 18, 1999
PubMed
Summary

Common micronutrient deficiencies damage DNA similarly to radiation, increasing cancer risk and potentially cognitive defects. Addressing these deficiencies may significantly improve health and longevity at a low cost.

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Area of Science:

  • Nutritional Science
  • Molecular Biology
  • Gerontology

Background:

  • Approximately 40 micronutrients are essential for human health.
  • Deficiencies in key vitamins (B12, folate, B6, niacin, C, E) and minerals (iron, zinc) can damage DNA, mimicking radiation effects.
  • A significant portion of the US population exhibits low intake or deficiency in these essential micronutrients.

Purpose of the Study:

  • To investigate the DNA-damaging effects of common micronutrient deficiencies.
  • To explore the link between micronutrient status, cancer risk, and cognitive function.
  • To examine the role of mitochondrial dysfunction and specific metabolites in aging.

Main Methods:

  • Analysis of DNA damage mechanisms associated with deficiencies in vitamins B12, folic acid, B6, niacin, C, E, iron, and zinc.
  • Epidemiological correlation between fruit and vegetable intake, micronutrient status, and cancer rates.
  • Intervention study in aged rats using acetyl-L-carnitine and lipoic acid to assess mitochondrial function and physical activity.

Main Results:

  • Micronutrient deficiencies can cause DNA strand breaks and oxidative lesions, similar to radiation and chemical mutagens.
  • Low folate intake leads to uracil incorporation into DNA, causing chromosomal breaks and potentially increasing cancer risk and cognitive decline.
  • Supplementation with acetyl-L-carnitine and lipoic acid in old rats restored mitochondrial function, reduced oxidative stress, and improved physical activity.

Conclusions:

  • Common micronutrient deficiencies pose a significant threat to DNA integrity and overall health, potentially explaining increased cancer rates in populations with poor diets.
  • Addressing widespread micronutrient deficiencies offers a low-cost strategy for improving public health and increasing longevity.
  • Acetyl-L-carnitine and lipoic acid act as conditional micronutrients, capable of reversing age-related mitochondrial decline and restoring function.

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