There's this myth that girls are getting their periods at younger and younger and younger ages, and it's actually not true at all. The average age for girls to get their period is about 12 1/2. That means that half of all girls will get their period when they're older than 12 1/2 and half will get their period when they're younger. And this has been true for many generations. It was true for our generation and even our mother's generation, about the same age. Now there's a big difference between that and a couple of hundred years ago. Girls did get their periods later when this country was being settled and the nutritional supply was not that good and girls were growing and developing older. That had to do with nutrition and nothing else. The big difference is not in when girls are getting their period, it's when girls are developing. Bodies are starting to change at a younger and younger age. So we'll see girls develop breasts or pubic hair or body odor much younger than we did. And no one really understands why this is the case. There are very smart people looking into what's in our environment, what's in our cosmetics, and what's in our food supply to try to determine what the cause is. Development is taking longer, puberty is taking longer, but girls are getting their period at about the same age.