Krishna, G., et al. Increased blood pressure during potassium depletion in normotensive men. N Eng J Med. 1989; 320:1177-1182.

Kurbacher, C., et al. Ascorbic acid (vitamin C) improves the antineoplastic activity of doxorubicin, cisplatin, and paclitaxel in human breast carcinoma cells in vitro. Cancer Letters. 1996; 103:183-189.

Lykkesfeldt, J., et al. Ascorbate is depleted by smoking and repleted by moderate supplementation: a study in male smokers and nonsmokers with matched dietary intakes. Am J Clin Nutr. 2000; 71:530-536.

Lesourd, B., et al. The role of nutrition in immunity in the aged. Nutr Rev. 56:S113-S125, 1998.

McCabe, R., et al. Potassium inhibits free radical formation. Hypertension. 1994; 24:77-82.

Moertel, C., et al. High-dose vitamin C versus placebo in the treatment of patients with advanced cancer who had no prior chemotherapy. A randomized double-blind comparison. N Engl J Med. 1985; 312:137-141.

Ness, A., et al. Vitamin C and blood pressure—an overview. J Hum Hypertens. 1997; 11:343-350.

Panda, K., et al. Vitamin C prevents cigarette smoke induced oxidative damage of proteins and increased proteolysis. Free Rad Biol Med. 1999; 27:1064-1079.

Park, J. and Levine, M. Intracellular accumulation of ascorbic acid is inhibited by flavonoids via blocking of dehydroascorbic acid and ascorbic acid uptakes in HL-60, U937 and Jurkat cells. J Nutr. 2000; 130:1297-1302.

Pauling, L. Evolution and the need for ascorbic acid. Proc Natl Acad SciUSA. 1970; 67:1643-1648.

Pauling, L. The significance of the evidence about ascorbic acid and the common cold. Proc Natl Acad SciUSA. 1971; 68:2678-2681.

Penn, N.