First time poster, frequent reader. I am about 6 months away from getting my PhD in Biochemistry, though I am strictly a computational biologist (comparative genomics). My goal in pursing this degree was to use math (I have BA in Mathematics and Integrated Science) to solve biological problems. Hasn't really happened. I have had some opportunities to dabble in both graph theory and information theory while working on my thesis, but I could never get those aspects of my research going (my boss left, not a lot of other math people around). If I am interested in becoming more serious about my mathematical education, is it stupid to go for a second PhD in mathematics? The goal would be to eventually revisit some of these biology problems, but with formal mathematics training. Has anyone found themselves in a similar situation? I know many physicists who made the jump to biology, a transition eased by the fact that they had formal math training. I am just looking for the best way to gain that training. After going through one degree, the notion of doing it again seems ridiculous to me, but I am not sure I see other options. Thanks in advance.