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To assess the distribution of serum concentrations of the atherogenic lipoprotein(a) Lp(a) in an obese population and the possible effects of weight reduction, we determined Lp(a) in 52 white, moderately obese subjects (16 men and 36 women). The subjects were participating in a weight-reduction program of diet, exercise, and behavior modification plus combination anorectic drug therapy (fenfluramine and phentermine). This placebo-controlled, double-blind study lasted 104 weeks. We also determined concentrations of fasting insulin, triglycerides, total cholesterol, high-density lipoprotein cholesterol, apolipoprotein (apo) A-I, low-density lipoprotein cholesterol, and apo B. Results showed the following: a highly skewed, nongaussian distribution of serum Lp(a) values in the obese population, virtually identical to that reported for healthy adults; no clinically significant change in Lp(a) concentrations with weight loss; and further evidence of normalization of insulin, lipid, and lipoprotein concentrations with weight loss.
Corsetti et al. (Mon,) studied this question.