physical effects of smoking cigarettes Health Problems Caused by Secondhand Smoke | and Tobacco Use Life-changing benefits of quitting smoking
Description
As their name implies, they bore through the bark to tunnel and feed on the phloem as illustrated in the graphic below

1983 Molecular Biology of Mutagens and Carcinogens New York: Plenum Press pp

How the Lungs Affect Anxiety Although smoking can contribute to a persons anxiety directly, the effect smoking has on the lungs may also contribute to the worsening of anxiety symptoms

I dont write from that place, although I do love it when other people do
They may prescribe stronger medications or run tests to rule out other possible causes of cough
