Yup it's a major contributor to both premature death and quality of life, we know that already, but it's hardly worthwhile to speculate what the covid situation would be like if not for the sugar industry, that's not the same at all as assessing obesity and diabetes as risk factors (which are highly relevant.)
How about we imagine we don't have heart bypass operations or stents, or blood thinning medication, how many more would die of heart disease?