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.
A serving of peanuts is equal to one ounce, or about 28 peanuts. That's also about the number of peanuts that'll fit in your hand. A handful of peanuts has about 166 calories, most of which come from fat, plus just under 7 grams of protein.