Yeah, a fifteen-fret uke will have two octaves. The lowest note is middle C. Then the E string (open) is the E above middle C, the A (also open) is the A above middle C, then fifteen frets down you have the second C above middle C. That's two octaves.
Yes, peanuts and peanut butter can aggravate arthritis. I was a peanut butter eater all my life, I am now 58.
Scientific evidence suggests, but does not prove, that eating 1.5 ounces of most peanuts, as part of a diet low in saturated fat and cholesterol, may reduce the risk of heart disease. In 2003, the Food and Drug Administration released a health claim recognizing peanuts in helping to maintain cholesterol.