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Safety and potential side effects
Fasting can be unsuitable for some and may have side effects.
For instance, people with diabetes may experience dangerous spikes and crashes in blood sugar from fasting. It can disrupt control.
Those with health conditions or planning fasts over 24 hours should consult a doctor first. They can guide managing risks.
Fasting is also not typically advised without medical supervision for seniors, youth, underweight individuals, or cancer patients. It may not be well tolerated.
If fasting, take steps to stay healthy:
- Stay hydrated by drinking plenty of water and unsweetened beverages. This prevents dehydration.
- Focus your diet on nutritious minimally processed foods when not fasting. This provides adequate nourishment.
- Reduce intense activity and get lots of rest on longer fasts. This conserves energy.
