You are not a unique and beautiful snowflake. You are an ugly bag of mostly water, with mostly the same DNA as everyone else.

Diet and exercise should be tailored to what actually works (as should everything else; feedback loops are awesome). You don't find out what works uniquely for you by having some expert guess based on what your DNA makes very slightly more likely, you find out by trying and seeing if and how your results differ from what's typical or what you expected.