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 handful of peanuts is a good source of protein, fiber, healthy fats, vitamins and minerals. Although they have 'nut' in their name, peanuts don't grow on trees so they're not related to almonds, walnuts, and other true nuts. Peanuts belong to the legume family so they're related to peas, dry beans and soy. 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.