So if Metformin is used to treat high blood sugar levels, would we get the same cognitive benefits by just consuming less sugar? Can't see the full paper to se

So if Metformin is used to treat high blood sugar levels, would we get the same cognitive benefits by just consuming less sugar? Can't see the full paper to see if they compared the results of metformin vs a low-sugar diet. EDIT: Already brought up and discussed here https://news.ycombinator.com/item?id=41522931#41523725 https://news.ycombinator.com/item?id=41522931#41523725