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Physical addictions involve substance dependence, leading to tolerance and withdrawal symptoms

Returning to earlier behavior (regressing to behaviors more appropriate for younger children)

In middle age, when Goodall could no longer live in the bush, she traveled the world relentlessly, some 300 days a year, as an educator and environmental activist

Paulin, MD, MHS Dartmouth-Hitchcock Medical Center Section of Pulmonary and Critical Care One Medical Center Drive Suite 5C Lebanon, NH 03756 Phone: (603) 650-5533 Email: [email protected] Abstract Introduction: A recent study found that the prevalence of chronic obstructive pulmonary disease (COPD) is significantly higher among adults who began smoking cigarettes before (versus after) 15 years of age, independent of current smoking, cigarette pack years, and smoking duration

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