Chocolate, butter, soda pose risk to health by middle age, study says By (0) It's no secret that too much sugar and saturated fat aren't good for you, but what food combos put you at greater risk for heart disease and death in middle age? The answer, from a new University of Oxford study, is likely to disappoint a lot of folks. Advertisement Researchers found that diets heavy in chocolate and pastries, butter, table sugar, sodas and fruit juices -- and low in fresh fruit and veggies -- are the worst. Also risky, though less so, are diets high in sugary drinks, chocolate and candy, table sugar and preserves -- even when those diets were lower in foods like butter and cheese, which are high in saturated fat.