We are more aware than mice though. Sugar is really bad for you .. really bad. Read up on keto diets (staying under 30g or sometimes under 10g of carbs per day .. limiting carb consumption to fruits with high fiber when you do eat them). I had a good friend who got on Ketro while he had cancer .. didn't tell his doctor, but within a few week a tumor shrunk by nearly a cm .. enough they could now operate.
Sugar is a powerful fuel source and modern humans don't need very much of it at all. The findings of this study don't really surprise me. All that extra unneeded sugar can totally feed young cancer cells.
I politely decline. In 2017 and 2018 I lost 100 lbs in 18 months and the primary staple of my diet was pasta dishes. The low-carb thing is not for me.
Like I said, find what works for you and ignore what people say is supposed to work. Today it is quite trendy to demonize carbs, tomorrow it may be something else, meanwhile plenty of healthy people eat lots of demonized items, but a narrow focus and overemphasis on good/bad may cause you to lose the big picture.
That matches my one-person anecdotal observations, but perhaps that isn't much to go by. Find what works for you. I had much better luck with health and personal fitness by that vs. getting overly worried about what other people say works.