can one cigarette a day cause cancer Smoking remains of the leading preventable causes of worldwide. It affects nearly every organ in the body and significantly increases the risk of cancer, cardiovascular disease, and chronic respiratory conditions What Happens to Your Body,

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One benefit of knowing whether a smoker is at increased risk for lung cancer is for his or her doctor to screen the person regularly for abnormalities, in the hopes of catching the cancer early

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For instance, chi-square tests, t-tests, ANOVA tests, and odds ratios were calculated for maternal depression three months prior to pregnancy, during pregnancy, and postpartum depression, along with maternal anxiety during pregnancy