Archive: The 2014 Study That Made Low-Carb Respectable Again

From the TI archives — originally published September 2014, when this study was making headlines.

In September 2014, the New York Times reported on a study that rattled conventional diet wisdom. Funded by the National Institutes of Health and published in the Annals of Internal Medicine, the trial followed 150 racially diverse men and women for a full year — a rarity in nutrition research. Half were assigned to limit carbohydrates; half to limit fat. Nobody was told to count calories.

The low-carb group did better on nearly every measure: they lost more weight and saw bigger improvements in cardiovascular risk markers, including HDL ("good") cholesterol. The takeaway that traveled furthest: quality of food seemed to matter more than calorie arithmetic.

TI's 2014 read was measured rather than triumphalist. Unsaturated fats — nuts, olive oil, fish — were never the enemy, the piece noted; the genuinely novel suggestion was to stop obsessing over calorie counts and focus on real food instead. The closing advice holds up well: avoid junk, sugar, and anything that looks like it came from a chemistry lab. Eat less, eat real food, move more.

A decade of follow-up research has complicated the low-carb story — long-term adherence is hard, and no single macronutrient ratio works for everyone. But the study's core challenge to calorie-counting orthodoxy stuck: what you eat shapes how much you eat, and the counting may matter less than the cooking.

General information only, not medical advice. Talk to a clinician before making major dietary changes.