First of all, lett me say that NH.is.Scientific offers excellent advice.in his post. I am a big fan of natural hygiene, a la orthomolecular medicine and folks such as Andrew Saul.
A couple of items which might be beneficial in addition to his advice are the supplements Drenamin (from Standard Process for fatigued adrenals) and Chromium GTF (for blood sugar).
Also, here is a simple guide which may prove helpful in achieving optimum health: