Within six months of starting a GLP-1 medication, households reduce grocery spending by an average of 5.3%.
A household doesn't take Ozempic, a person does. Are they implying that if everybody in the household takes Ozempic, as a group they see a 5% reduction? Or, any one person in the household causes a 5% reduction for the group? The average household in the US is 2.5 people...
I'd go for this one. Which means the one person reduces their food intake by at least double the 5%.
Or possibly the other people in the household see them eating less and follow their example...