My grandfather had colorectal cancer, my brother who is only 31 has it as well. Should I be screened early for this disease?

Yes. Your brother should also consider genetic testing. But regardless of his results, yes you need to have screening earlier. Hope this helps.
Yes. If your brother also has it at 31, you should be screened early as well.
Colorectal cancer. Studies have shown a familial association for colorectal cancer. There may be a 2-3 times increased risk if a first degree relative has the problem. The recommendation is to screen the immidiate family.