The New Elixir of Youth?

I have never heard of hgh supplement until only recently. It was my aunt in the Philippines who mentioned it to us. She said it's the new elixir of youth. Well, not exactly the one that will keep you young forever but it will somehow slow down the signs of aging. Because according to this information I got from the web, at age 30 our brain starts to slow down in producing HGH thus we begin to show physical signs of aging. Interesting, right?