In the clinic, I often meet patients who approach fasting with two extremes: enthusiasm or fear.
Some see it as a miracle solution—“Doc, magfa-fasting na lang ako para gumaling.” Others worry it is dangerous—“Baka mahilo ako, baka bumagsak ang asukal ko.”
Both reactions miss the point.
Fasting is neither a cure-all nor a threat. It is a tool.
Used properly, fasting can improve metabolic health, reduce inflammation, and help patients regain control over eating patterns. Used improperly, it can lead to hypoglycemia, dehydration, or nutritional imbalance—especially in those with underlying illness.
The key is not intensity. It is appropriateness.
Not everyone should fast. Patients with diabetes on medication, pregnant women, the elderly, and those with chronic illness require careful assessment. Even among healthy individuals, fasting should be introduced gradually, not abruptly.
Equally important is what happens outside the fasting window. If fasting is followed by overeating or unhealthy food choices, its benefits are lost. In fact, harm may result.
Fasting should not be viewed as punishment. It is better understood as structured rest for the body—a pause that allows metabolic processes to recalibrate.
Interestingly, many of our cultural and spiritual traditions have long embraced fasting—not merely for physical benefit, but for discipline, reflection, and clarity. Modern science is only beginning to explain what these traditions have practiced for centuries.
As physicians, our role is not to promote or discourage fasting indiscriminately, but to guide patients toward safe, sustainable practices tailored to their condition.
Health is rarely found in extremes.
It is found in balance.
