The role and benefits of zinc in female hormonal balance

Zinc is involved in hormonal regulation to naturally support your menstrual cycle. It participates in the balanced production of oestrogen and progesterone — two hormones essential for regular ovulation and more stable periods. In cases of zinc deficiency, you may experience irregularities and more pronounced pain (dysmenorrhoea) due to suboptimal follicular maturation.

To ease these cramps, moderate supplementation of 7 mg of zinc per day for at least eight weeks has proved effective. The reason? Its antioxidant and anti-inflammatory properties, which calm uterine spasms.

By rebalancing oestrogen and progesterone levels, zinc supports oocyte maturation and pregnancy stability, thereby improving female fertility. It contributes to the quality of reproductive cells — a valuable asset for women who are pregnant or trying to conceive. According to a study published in 2021 in Nutrients, adequate zinc intake is associated with better chances of conception and greater cycle regularity in women affected by polycystic ovary syndrome.

Zinc has a significant impact on female fertility. It is necessary for the development and maturation of oocytes, as well as for the preparation of the uterus for the implantation of a fertilised egg. A zinc deficiency can lead to fertility problems — such as infertility or difficulty conceiving — due to impaired oocyte quality and disrupted ovarian function.

Furthermore, zinc is involved in the processes of fertilisation and embryonic development. The rapid release of zinc, known as the "zinc spark", is essential for egg activation following fusion with the sperm cell and for preventing polyspermy.

Zinc is also necessary for the division, proliferation and differentiation of the pre-implantation embryo.

Zinc directly modulates the activity of oestrogen receptors, attenuating the effects of hormonal variations throughout the reproductive lifespan. Whether your oestrogen levels are too high or too low, this trace element helps maintain a balance that prevents menstrual disorders, mood swings, early menopause and even certain cancer risks.

By stabilising these levels, zinc plays an essential protective role for your comfort and overall health.

Zinc also participates in the synthesis and secretion of luteinising hormone (LH) and follicle-stimulating hormone (FSH), both indispensable for triggering ovulation and producing progesterone. It also helps regulate testosterone levels, thereby contributing to the harmony of all sex hormones.

Thanks to this combined action, you can benefit from more regular cycles and less debilitating symptoms.

During PMS, zinc limits the production of prostaglandins responsible for painful uterine contractions. Supplementation of 7 mg per day for eight weeks helps reduce abdominal and lower back cramps through its antioxidant action, which also improves endometrial microcirculation. Beyond these benefits, you may notice less bloating, water retention, headaches, breast tenderness and premenstrual acne.

Although a balanced diet is generally sufficient to meet zinc requirements, certain situations may call for food supplements to help regulate hormones. Here are some cases where this may be recommended:

• Zinc deficiency: If a blood test reveals a zinc deficiency, a supplement may be necessary to correct this shortfall. It is essential to consult a doctor to identify and address the underlying cause of the deficiency.
• Restrictive diets: Vegetarians, vegans or people following specific diets may be more susceptible to zinc deficiency, as zinc from plant-based foods is less readily absorbed by the body. In these cases, a supplement may be beneficial.
• Pregnancy and breastfeeding: Pregnant or breastfeeding women have increased zinc requirements due to foetal development and breast milk production. A doctor may recommend a supplement to ensure adequate intake.
• Side effects and interactions: It is important to consult a doctor before taking a zinc supplement. It can interact with certain medications and cause side effects such as indigestion, diarrhoea, headaches, nausea or vomiting.