Sickle cell anemia: a potential nutritional approach for a molecular disease

Nutrition. 2000 May;16(5):330-8. doi: 10.1016/s0899-9007(00)00257-4.


A certain population of red blood cells in patients with sickle cell anemia has an elevated density and possesses an abnormal membrane. These "dense cells" have a tendency to adhere to neutrophils, platelets, and vascular endothelial cells, and, thus, they could trigger vasoocclusion and the subsequent painful crisis from which these patients suffer. We developed a laboratory method of preparing such dense cells and found that nutritional antioxidant supplements, hydroxyl radical scavengers, and iron-binding agents could inhibit the formation of dense cells in vitro. The concentrations at which effective nutritional supplements could inhibit dense cell formation by 50% were 4.0 mg/mL for aged garlic extract, 0.38 mg/mL for black tea extract, 0.13 mg/mL for green tea extract, 0.07 mg/mL for Pycnogenol, 930 microM for alpha-lipoic acid, 270 microM for vitamin E, 45 microM for coenzyme Q(10), and 32 microM for beta-carotene. Both an ex vivo study and a pilot clinical trial demonstrated that a cocktail consisting of daily doses of 6 g of aged garlic extract, 4-6 g of vitamin C, and 800 to 1200 IU of vitamin E may indeed be beneficial to the patients.

Publication types

  • Clinical Trial
  • Controlled Clinical Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Anemia, Sickle Cell / blood
  • Anemia, Sickle Cell / diet therapy*
  • Antioxidants / administration & dosage
  • Antioxidants / therapeutic use*
  • Centrifugation, Density Gradient
  • Dietary Supplements*
  • Female
  • Hematocrit
  • Humans
  • Male
  • Pilot Projects


  • Antioxidants