People with prediabetes who'd had nutrition lessons knew far more. Their eating habits scored almost exactly the same

Prediabetes is the stage where food changes pay off most clearly, and also the stage people are least likely to feel. Blood sugar sits above normal but below diabetes, usually with no symptoms at all. Two endocrinologists in Beijing wanted to know how much people at this stage understand about eating for it, how they feel about it, and what they actually do. In June and July 2026 they surveyed adults with prediabetes at Beijing Anzhen Hospital, in clinics, on wards and through online patient groups, and kept 449 questionnaires after weeding out rushed, implausible or careless ones.

The questionnaire had three parts. Ten items asked how familiar people felt with ideas such as fibre slowing the rise in blood sugar, or white bread and sweet drinks pushing it up fast. Eight asked how far they agreed with statements about nutrition therapy. Seven asked how often they did things like checking food labels or watching staple-food portions. Just over half (53.2%) landed in the 'low' band for knowledge, and most were 'moderate' on attitudes and habits. Only 95 of the 449, about one in five, said they had ever had nutrition-therapy education.

Those 95 scored much higher on knowledge: 15.75 out of 20 against 11.03, and in the adjusted model prior education went with nearly five extra points, the biggest link the study found. They were a little more positive in attitude as well. But their average habit score was 22.77 out of 35 against 22.70 for everyone else, a difference that wasn't statistically significant. That comparison is unadjusted, and the paper's own regression didn't test education against habits, so it is a hint rather than a finding. Still, it fits the authors' conclusion that handing out information isn't enough; they suggest skills practice instead, such as reading real food packets, judging portions with household bowls and plates, and trying the order of foods on a plate.

Some answers stand out. Only 39.2% agreed that intervention should start early, at the prediabetes stage; 47.2% were neutral. Fewer than half agreed that nutrition therapy can stop prediabetes becoming diabetes, and 18% said they didn't know it could, although large trials such as the US Diabetes Prevention Program showed lifestyle change cut new cases by more than half. Eating vegetables first, protein second and starchy staples last was the least familiar idea (19.4% had never heard of it) and the least practised: 22.5% rarely or never did it. Habits were better in people aged 60 or over, those with a stable income and those who also had high blood pressure.

The limits matter. This was a one-off survey of a convenience sample from a single hospital, 96% of them city dwellers, so it describes associations and can't say that education or attitudes cause better habits. Knowledge meant how familiar people felt, not whether they got questions right, and habits were self-reported. The authors note that more health-conscious people may be the ones who seek out education in the first place. For anyone recently told their blood sugar is 'borderline', the practical point is simple: ask for nutrition advice early, and ask for the hands-on kind, because knowing what to eat and doing it every day turned out to be different things here.