HBD has been generally disregarded as bunk science. I have yet to see anything otherwise that isn't on some vaguely conspiratorial and mostly self-referential blog somewhere.
Really? Scientifically it has been proven over and over. It just isn't mainstream.
"Scientifically it has been proven ... It just isn't mainstream" - the presence of these words, in this precise sequential order, has been empirically demonstrated to indicate that the author is a crackpot.
There are peer reviewed papers you know, with replication and everything. It's regarded as bunk science by the exact same kinds of people who say climate change science is bunk science: people who don't read the science papers.