Reference for Pesachim 225:4
א"ל רב לחייא בריה לא תשתי סמא ולא תשוור ניגרא ולא תעקר ככא ולא תקנא בחיויא ולא תקנא בארמאה
Rab said to his son Hiyya: Do not take drugs<span class="x" onmousemove="('comment',' Even as a medicine, as they are habit forming.');"><sup>9</sup></span> and do not leap in great jumps;<span class="x" onmousemove="('comment',' Or: do not jump over a brook - the strain affects the eyesight.');"><sup>10</sup></span> do not have a tooth extracted,<span class="x" onmousemove="('comment',' When you have toothache - it will eventually cease in any case. [R. Hananel refers it to a molar tooth, the extraction of which affects the eyesight. Preuss, Biblisch - talmudische Medizin, p. 330, quotes Celsus: majore periculo in superioribus dentibus fit (extractio) , quia potest tempora oculosque concutere].');"><sup>11</sup></span>