The section on the connection between dopamine and grief was mind-blowing. A naturopath recently told me I have an overabundance of dopamine in my system, but I feel sad a lot of the time. In the past year, I quit the job I thought would be my last, sold my condo and moved from my long-time community, ended a dead-end relationship and euthanized my 16 year old pet after years of illness. As I read this, I am understanding a bit better what my brain and heart are going through.