The World Health Organization has added a new dimension to the case against tobacco use, confirming that smoking measurably reduces fertility across populations worldwide — not merely as a distant consequence, but as a present biological reality affecting those who hope to build families. Beyond the familiar harms to lungs and heart, tobacco disrupts the endocrine and vascular systems that sustain reproductive capacity, making cessation not only a matter of longevity but of life's most fundamental continuities. In this light, the clinical encounter becomes something more than a warning about f