Typically, people who have diets high in saturated fat have an increased risk of heart disease. █████ ███ ███████ █████████ ███ ██ █████ █████ ████ ███████████ ███ ████████ █████ ████ ██ █████ ████████ ██████████ ██████ ███ ███ █ ███ ██ █████████ ███ ███ █████ █████ ████ ██ █████ ███████ ██ ██████████ █████ ██████ ██ ███████████ ████
The author concludes that people who eat a lot of saturated fat can reduce their risk of heart disease by eating more unsaturated fat. As support, she says that people can reduce their risk of heart disease by replacing saturated fat with unsaturated fat.
The author’s premise is about replacing saturated fat with unsaturated fat, but her conclusion is simply about adding more unsaturated fat. She’s assuming that increasing unsaturated fat in one’s diet also makes one eat less saturated fat, which reduces heart disease risk.
Which one of the following, ██ ████████ ████ █████ ██ ███████ ███ █████████ ██████
People who add ███████████ ███ ██ █████ █████ ████ ███ ████ ████ ████ ██ ████ ██ █████████ ████
Replacing saturated fat with unsaturated fat reduces the risk of heart disease. If people who add unsaturated fat to their diets will also eat less saturated fat, this helps justify the conclusion that people can reduce their risk of heart disease by adding unsaturated fat.
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This leads to the wrong conclusion. The author’s conclusion is only about reducing the risk of heart disease. The fact that adding unsaturated fat to one’s diet brings other benefits does not help justify this conclusion.
Diet is the ████ █████████ ██████ ██ █ ████████ ████ ██ █████ ████████
Even if this is true, it doesn’t tell us anything about increasing unsaturated fat. Overall diet may be important, but we still need to know whether increasing unsaturated fat in the diet reduces the risk of heart disease.
Taking steps to ███████ █████ ███████ ██ ███ ██ ███ ████ █████████ ████ ██ ██████████ ████ ███████████
The conclusion only addresses heart disease risk, not life expectancy. Even if preventing heart disease increases life expectancy, we still need to show that increasing unsaturated fat can reduce heart disease risk in the first place.
It is difficult ██ ████ ████ █ ████ ████ ██ ████ ██ █████████ ███ ██ █ ████ ████ ████████ ████ ██████ ████
It doesn’t matter how difficult it is to reduce saturated fat. We just need to show that increasing unsaturated fat lowers saturated fat and thus lowers heart disease risk.