3 doctors weighed in:
Does fasting delay periods?
3 doctors weighed in

Dr. Guy DaSilva
Preventive Medicine
2 doctors agree
In brief: It sure can
One way that fasting effects the periods is by reducing thyroid function.
As part of a work-up for irregular periods, i will often look at thyroid function as a cause. Hypothyroidism is common to irregular periods. When a person fasts, the thyroid goes into conserve mode. It slows down metabolism as to not "eat you up" alive. During a fast, the thyroid- believes there is a famine- will lower.

In brief: It sure can
One way that fasting effects the periods is by reducing thyroid function.
As part of a work-up for irregular periods, i will often look at thyroid function as a cause. Hypothyroidism is common to irregular periods. When a person fasts, the thyroid goes into conserve mode. It slows down metabolism as to not "eat you up" alive. During a fast, the thyroid- believes there is a famine- will lower.
Dr. Guy DaSilva
Dr. Guy DaSilva
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