Which foods are acidic?

The pH scale is a ranking of acidity. The "p" stands for potenz, meaning potential to be, and the "H" is for hydrogen. On this scale, a 7.0 measures neutral — neither acidic nor alkaline. Water is a 7.0. Anything measuring a pH of 6.9 or below is considered an acid; anything 7.1 and above is considered an alkali or base. 

What's up with iodized salt - Is it better for you than regular salt?

Dear Alice,

What is it with iodized salt? We just bought a pound of salt and it is not iodized. Are we at some risk for dreaded ailments? Since a pound of salt lasts FOREVER at our house, should we re-consider and get the iodized version?

Wondering

I want acne to be gone!

Dear Alice,

I would like to know something about acne. I am a high school student, and have gotten acne. I got it for more than two years, and would like to find a way to cure it. I currently use Neutrogena's Acne face wash, Neutrogena's overnight acne treatment, and some face washers.