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In vitro fertilization (IVF)
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Apr 30, 2025

How to thicken your uterine lining for IVF

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Several factors significantly influence the outcome of in vitro fertilisation (IVF) treatment. One of these factors is the uterine lining, also known as the endometrium. The lining is the environment where an embryo implants, which is crucial for a successful pregnancy. The thickness of the lining is particularly important, as it decreases the likelihood of implantation failure.

A diagram depicting the four stages of the menstrual cycle

How does your uterine lining change throughout your cycle?

Throughout the menstrual cycle, the uterine lining thickens so that an embryo can implant in the uterus and develop into a pregnancy.

If the ovulated egg is not fertilised by sperm, the egg is absorbed back into the body. Subsequently, the oestrogen and progesterone levels in the body decrease, and the thickened lining sheds; this is when the period starts. Then the process begins again.


Why does uterine lining thickness matter for conception?

For implantation to take place and conception to be successful, a thick enough uterine lining is needed. A thin lining may make it difficult for an embryo to implant and can also increase the risk of miscarriage.

A thick uterine lining provides essential nutrients and an optimal environment for the embryo to develop in the early stages of pregnancy. It also contributes to the development and function of the placenta to help transfer nutrients and oxygen between the mother and baby.

A diagram of an egg fertilising, developing into an embryo and implanting in the uterus for conception

What causes a thin uterine lining?

Age – Menopausal women experience a depletion of functional follicles in their ovaries, leading to low oestrogen levels. Therefore, the uterine lining becomes thin due to the decline in ovarian function. Furthermore, the blood supply to the lining is reduced, which has an impact on the lining.  

Gynaecological conditions – Conditions like polycystic ovary syndrome (PCOS), endometriosis and fibroids can disrupt hormonal levels and affect the lining.

Scarring – Previous surgeries on the uterus can cause scarring, which can interfere with the uterine lining growth.


Picture of women preparing a health drink using Avocado

How to treat a thin uterine lining

There are different ways to treat a thin uterine lining. During your consultation, we will discuss your treatment plan, but here are some steps you can take to support the process.

Dietary changes – A balanced diet that includes the right foods and nutrients can help improve the thickness of the uterine lining. Consider consuming protein-rich foods, such as tofu, legumes, and turkey. Additionally, incorporating good sources of antioxidants, such as berries, vegetables, and nuts, can be beneficial.

Exercise – Staying active and incorporating regular exercise into your daily routine can enhance blood flow to the pelvic area, which may improve uterine thickness.

Hormonal therapy – Your doctor or fertility clinic may prescribe oestrogen supplements to help with hormonal imbalances, which can help thicken the lining.

By following these steps and working closely with your fertility clinic or doctor, we can find the best way to help enhance your chances of conception.

Surfer with curly hair in a wetsuit holding a surfboard on a beach, with waves and a cloudy sky in the background.


How long does it take?

The duration of the process will depend on the type of treatment you are receiving. Rest assured, our medical team will discuss various methods to thicken the uterine lining that are suitable, along with the timeline, in detail during your consultation.


How much does the uterine lining thicken each day?

There is no set rate at which the uterine lining thickens; this can vary based on various factors, including the phase of the menstrual cycle and whether the individual is menopausal or undergoing fertility treatment. Our medical team will discuss these details with you during your consultation, taking your circumstances into account


Reviewed by Justin Chu, Medical Director at TFP Oxford Fertility.


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