This is true, however, if a regression is done properly there should not be any residual effects ...
Mine was like watching TV - I saw the person who looked like me living her life - it outlined the circumstances for the decisions that were made at the time regardless if they were good or bad as well as the body s/he inhabited & what type of person they were at the time ...
These are very important to know in making the regression a learning experience ...
From what I have gathered, many who have visited psychics not trained & certified in past life regression experience negative effects ...
I had a past life experience of my own you might find interesting. Only mine was in the form of a reoccurring dream. I outlined it on my intro thread a while back. http://www.interfaith.org/forum/enjoying-the-experience-16779.html#post284175