Boys and girls are reaching puberty earlier than ever before. Researchers suspect obesity, environment and nutrition are among the factors that accelerate sexual development. So don t be surprised if your tween hits puberty earlier than you did. The important thing is to arm your child with information so they know what to expect.

A little humor certainly helps the conversation along. The Hello-flo company nailed it with this ad that racked up five million views on YouTube in a week. The company offers a monthly subscription tampon service and period starter kits for girls. With this ad they're helping to reshape the conversation about periods so that girls can feel empowered not ashamed.

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