What is the link between fasting and hormone balance, and what does the evidence show in Europe?

Fasting and hormone balance explained: insulin regulation, cortisol response, thyroid hormones, reproductive hormones, and metabolic adaptation.

In this episode, we examine how intermittent fasting and time-restricted eating may influence hormone levels and how doctors interpret these effects under EU medical guidance.

You’ll learn:

• How fasting lowers insulin levels and improves insulin sensitivity

• The role of cortisol during prolonged fasting

• Potential effects on thyroid hormones (T3 changes)

• How significant calorie restriction may affect menstrual cycles

• The relationship between fasting, testosterone, and body fat percentage

• Differences between short-term metabolic shifts and long-term endocrine health

• Situations where fasting may be discouraged (pregnancy, diabetes on medication, eating disorders)

We explain how doctors assess BMI, HbA1c, menstrual history, thyroid function, stress levels, medication use, and overall metabolic risk during an online consultation in the EU. Fasting influences hormones through energy balance, but it is not a direct treatment for endocrine disorders.

This episode reflects the clinical standards used by Mobi Doctor, where metabolic and endocrine consultations are reviewed by a registered physician in line with EU medical guidance.

Read the full guide and transcript here:

https://www.mobidoctor.eu/blog/the-link-between-fasting-and-hormone-balance