4. The premenstrual syndrome we face in the 1^st half of our period cycle is due to estrogen. It leads to issues like water retention, headache, and breast tenderness. It also affects our mood in general.

5. Hair loss is another symptom.

6. You may suddenly gain weight in the thigh and waist regions.

7. The dominance of estrogen also makes our mind foggy thus hindering our brain functions.

8. Your circadian rhythm is affected negatively.

9. The function of the thyroid gland is affected. It results in weight gain.

10. The metabolism slows down due to fluctuating estrogen levels.