bejuice,
What you are describing are the effects of cortisol, a hormone secreted by the body under stress:
http://stress.about.com/od/stresshealth/a/cortisol.htm
One study found that altered cortisol rhythms could predict survival among metastatic breast cancer patients:
http://jnci.oxfordjournals.org/content/92/12/994.full
This is another instance where having endocrinologists involved in breast cancer treatment could have advantages.
It sounds like some of your stress is related to performance anxiety (giving big presentations at work). In 1976, The Lancet published a research article that showed that Beta Blockers were effective at reducing stage fright:
http://en.wikipedia.org/wiki/Beta_bl...ce_enhancement
They continue to be rx'd off-label for this use. They may provide an alternative option to more conventional anti-anxiety medications.
Stress reduction is good for all of us, as stress does have demonstrable negative physical effects on many of the body's systems. Thanks for bringing up this topic.
Hopeful