The team speculates that this might be because animals have to drink a lot of water to make urine, which can be
unhealthy in the saltier waters where these turtles spend some of their time.
Fourthly, whereas taxes on
unhealthy foods may be problematic because of concern about unintended substitution effects (for example, a tax on foods high
in saturated fat may lead to a shift towards
salty foods), 13 the potential substitutes for sugar sweetened drinks (diet drinks, fruit juice, milk,
water) are probably less harmful for health.