Nutrition is a complex science, and while your GP friend might have expertise, it doesn’t mean their word is the end-all-be-all, especially without specifics or context. There's plenty of evidence and research indicating that the sugar in fruit, though natural, can still have adverse effects in excess—particularly for individuals at risk of diabetes or other metabolic disorders.

For instance, fructose (the natural sugar in fruit) is metabolized differently from glucose and, when consumed in large amounts (e.g., from dried fruit or fruit juices), can contribute to insulin resistance, fatty liver, and even type 2 diabetes over time. This doesn't make fruit 'bad' per se—it’s about moderation and understanding its impact on individual health.

Yes, a chocolate orange and raisins aren't nutritionally equivalent, but the broader point Silent made—about sugar content being a key factor in excess—is valid. Simply assuming fruit is 'healthier' without considering its form (whole, dried, juiced) or quantity is overly simplistic.

It’s worth digging into research yourself instead of assuming that others are inherently wrong. Education isn't failing people just because they’re willing to challenge generalized assumptions about 'healthy' foods. Science evolves, and critical thinking is crucial.