I strongly believe that now..
I got a personal message from Adsense team in India and that guy called me up to help me to monetize my traffic. he given me few advice over phone and then i told him to mail me all the details, he took screen shots of my pages and pointed me where to put adsense banners.
I followed his advice and just after doing this.. almost 2 weeks after that.. I started loosing all my traffics and I reached from 8000 unique to 700 unique. I was very much worried about what went wrong, then somewhere in a forum i read about the adsense placement above the fold.
I removed all the adsense and just put one adsense ad below the fold.. at the bottom of my page, and you will not believe within 3 days my traffic went to normal and even increased. for almost 2 years i was loosing traffics but after doing this adsense removal, I started gaining position as I was in back in 2010
My bounce rate got better, traffic is also increasing and I have started getting the positions where I was in 2010.
a BIG no no to adsense advisers, they seriously do not know anything about their own search algorithms.