The Benefits of Fasting

The increase in readily available excess calories over the past century has been shown to correlate with an increase in onset of many chronic illnesses. Researchers have demonstrated that appropriate fasting may potentially build healthy resilience and benefit those with chronic illnesses, leading to improved overall population health.

Periods of fasting have long been shown to improve insulin sensitivity for patients with type 2 diabetes. In one study, intermittent fasting significantly reduced HbA1c and improved glycemic control. In a case series with three patients, type 2 diabetes was reversed, eliminating the patients’ need for insulin.

Research has shown fasting is beneficial for other metabolic conditions as well. A US study of Mormons showed periodic religious fasting was associated with a lower incidence of coronary artery disease (CAD). In patients with CAD, routine periodic fasting has been correlated with a lower incidence of type 2 diabetes. In addition, studies have shown intermittent fasting significantly improves fatty liver index, fasting insulin, insulin resistance, and inflammatory markers.

Timing of meals is an emerging area of research, with early evidence showing that evening fasting may be more effective than morning fasting, and that eating fewer meals during the day may reduce the incidence of disease.

Fasting may not be appropriate for everyone. Patients who have a history of eating disorders, diabetes, or chronic medical conditions should consult their physician before trying intermittent fasting.