>>11992447No, unless you want to completely change career trajectory to a field that needs a math PhD. For any career in biological or biomedical research, you have plenty of a quantitative background (biophysics-y chemical biology PhD, math minor in undergrad). Depends on what you want to do next, I guess, but I just don't see how it's worth the time and money to finish the undergrad math degree. My thought is even if you went into a quantitative-heavy "non-traditional" career after your PhD, like consulting or finance, you'd be focused in life sciences, and still would have more than enough physics and math background to pick-up what you'd need. Do you have coding experience? That could help, I suppose, but you can pick-up on your own. My background is very similar to yours, undergrad in molecular and cell biology and chemistry, but no math minor. Did PhD in biophysics, my graduate work was heavy in structural biology with some chem bio. Now mostly structural biology-focused postdoc. At this point, it's mostly about learning on your own, maybe dropping in on some coursework, but you're assumed "to have learned how to learn" in your PhD, especially with the quantitative background. If you want to shift gears in research, maybe a computationally-heavy postdoc? Would be much cheaper and probably better for your career over going back to get a second BA/BS in math.