They know that, and took it into account. From the abstract:
"Ultraprocessed foods consumption was associated with younger age (45-64 years, mean [SE] proportion of food in weight, 14.50% [0.04%]; P.001), lower income (€1200/mo, 15.58% [0.11%]; P.001), lower educational level (no diploma or primary school, 15.50% [0.16%]; P.001), living alone (15.02% [0.07%]; P.001), higher body mass index (calculated as weight in kilograms divided by height in meters squared; 30, 15.98% [0.11%]; P.001), and lower physical activity level (15.56% [0.08%]; P.001). A total of 602 deaths (1.4%) occurred during follow-up. After adjustment for a range of confounding factors, an increase in the proportion of ultraprocessed foods consumed was associated with a higher risk of all-cause mortality"
They are not stupid. They are aware of those correlations, and accounted for them. From the abstract:
"Ultraprocessed foods consumption was associated with younger age (45-64 years, mean [SE] proportion of food in weight, 14.50% [0.04%]; P.001), lower income (€1200/mo, 15.58% [0.11%]; P.001), lower educational level (no diploma or primary school, 15.50% [0.16%]; P.001), living alone (15.02% [0.07%]; P.001), higher body mass index (calculated as weight in kilograms divided by height in meters squared; 30, 15.98% [0.11%]; P.001), and lower physical activity level (15.56% [0.08%]; P.001). A total of 602 deaths (1.4%) occurred during follow-up. After adjustment for a range of confounding factors, an increase in the proportion of ultraprocessed foods consumed was associated with a higher risk of all-cause mortality"
Slashdot Mirror
They know that, and took it into account. From the abstract:
"Ultraprocessed foods consumption was associated with younger age (45-64 years, mean [SE] proportion of food in weight, 14.50% [0.04%]; P.001), lower income (€1200/mo, 15.58% [0.11%]; P.001), lower educational level (no diploma or primary school, 15.50% [0.16%]; P.001), living alone (15.02% [0.07%]; P.001), higher body mass index (calculated as weight in kilograms divided by height in meters squared; 30, 15.98% [0.11%]; P.001), and lower physical activity level (15.56% [0.08%]; P.001). A total of 602 deaths (1.4%) occurred during follow-up. After adjustment for a range of confounding factors, an increase in the proportion of ultraprocessed foods consumed was associated with a higher risk of all-cause mortality"
You are so, so arrogant...
They are not stupid. They are aware of those correlations, and accounted for them. From the abstract:
"Ultraprocessed foods consumption was associated with younger age (45-64 years, mean [SE] proportion of food in weight, 14.50% [0.04%]; P.001), lower income (€1200/mo, 15.58% [0.11%]; P.001), lower educational level (no diploma or primary school, 15.50% [0.16%]; P.001), living alone (15.02% [0.07%]; P.001), higher body mass index (calculated as weight in kilograms divided by height in meters squared; 30, 15.98% [0.11%]; P.001), and lower physical activity level (15.56% [0.08%]; P.001). A total of 602 deaths (1.4%) occurred during follow-up. After adjustment for a range of confounding factors, an increase in the proportion of ultraprocessed foods consumed was associated with a higher risk of all-cause mortality"