Intriguingly, the highest BMI category (≥27.0 kg/m2), obesity, was not associated with SPCC after adjustment for confounding factors, which suggests that rather than obesity itself, factors potentially related to obesity, such as shorter sleep, undesirable diets, infrequent exercise, low HDL-C, high ALT, and WBC count, and gastrointestinal dysfunctions, may have more influence on the sensitivity of the common cold. This evidence concerns the gene GPT and Obesity.