Is gentrification good? Like a great many things, dose matters. Some gentrification is good, but take it too far and you get SF where even high earning professionals are priced out the minute they consider having children. The result is a workaholic equivalent of the "man camps" that surround oil fields-- a "six figure slum" devoid of all culture and family life save that of 20-something professionals with no kids.

(That was my impression of parts of SF / SV last time I visited: a six figure slum.)

A little vitamin E is good for you too, but too much seems to increase your risk of cancer. Even more will make you sick on shorter order, and even more than that could kill you.