The Claim
In patients with coronary artery disease undergoing cardiac rehabilitation, a low-carbohydrate diet leads to transient improvement in glycemic control, as measured by HbA1c, during inpatient rehabilitation, but HbA1c levels rebound significantly more at 6-month follow-up compared to those on low-fat or standard diets.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
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Patients with coronary artery disease who follow a low-carbohydrate diet during inpatient cardiac rehabilitation experience a temporary improvement in blood sugar control, but their blood sugar levels rise back to higher levels than those of patients on low-fat or standard diets by six months after discharge.
See the scientific wording
In patients with coronary artery disease undergoing cardiac rehabilitation, glycemic control improves transiently during inpatient rehabilitation with a low-carbohydrate diet, but this benefit is not sustained at 6-month follow-up, with HbA1c levels rebounding significantly more than in those on low-fat or standard diets.
When someone with heart disease eats fewer carbs, their body becomes more sensitive to insulin for a short time, so blood sugar drops. But after they go back to normal eating, their body responds by becoming resistant to insulin, which causes blood sugar to rise again.
What the research says
1 studyWhen heart patients eat fewer carbs during rehab, their blood sugar gets better for a while—but after they go home, it often goes back up, more than if they ate low-fat or normal food.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.