Sponsored article by Anucha Kasun
THE most useful thing to know first: your ICSI success rate depends on a mix of factors, and several of them respond to choices you make before and during treatment. ICSI, short for intracytoplasmic sperm injection, is a fertilisation method used inside an IVF cycle. An embryologist injects a single sperm directly into an egg in the lab, and the fertilised egg then develops into an embryo before transfer. Because ICSI is one step within IVF rather than a separate treatment, the result reflects egg quality, sperm quality, laboratory conditions, and your general health, not the injection alone.
Here is what you can do to help optimise your ICSI and IVF success rate including looking after weight, nutrition, and lifestyle.
Pay attention to age and ovarian reserve
Age remains one of the strongest predictors of any IVF outcome, including cycles that use ICSI. Egg quality and quantity decline over time, which affects how many eggs fertilise and how many develop into healthy embryos. You cannot change your age, but you can act on the timing. If you have been trying for a while without success, an earlier fertility assessment gives you and your doctor more options rather than fewer.
Support sperm health
ICSI is often recommended when sperm count, movement, or shape make natural fertilisation less likely. Sperm quality still counts even when a single sperm is selected. Simple steps can help over the roughly three months it takes for new sperm to develop: a balanced diet, regular sleep, less alcohol, stopping smoking, and keeping the testicular area cool. A semen analysis gives your fertility team a clear starting point, and in some cases, they may suggest further testing.
Look after weight, nutrition, and lifestyle
Body weight that is very high or very low can affect hormone balance and the ovaries’ response to stimulation. A steady, realistic approach to nutrition and activity in the months before a cycle helps more than a sudden change. Reducing smoking and heavy alcohol use matters for both partners. These habits will not decide the outcome on their own, but they may help remove possible obstacles.
Manage underlying medical conditions
Conditions such as thyroid disorders, polycystic ovary syndrome, endometriosis, and poorly controlled diabetes can all influence a cycle. Getting these reviewed and stabilised before treatment gives the process a better footing. Tell your fertility specialist about your full medical history and any medications you take, as some may need to be adjusted.
Follow the treatment plan closely
Once a cycle begins, small details add up. Taking medication at the right time, attending every monitoring scan, and reporting side effects promptly all help your team adjust as your body responds. Never change or stop a fertility medication without speaking to your treating clinician.
Choose the lab and clinic carefully
With ICSI, the embryologist’s skill and the lab’s standards are key to fertilisation and embryo development. When you compare clinics, ask practical questions about how they monitor cycles, handle embryos, and provide support. Where it is clinically appropriate, your doctor may also discuss genetic testing of embryos to determine which embryos can be transferred.
No single factor tells the whole story
It helps to keep expectations realistic. No clinic can promise fertilisation, implantation, or a live birth, and a healthy result usually comes from several factors. Knowing your own numbers, from egg count to sperm results to embryo development, lets you make informed decisions with your care team.
If you are weighing ICSI as part of IVF and want a clearer picture of what could shape your ICSI success rate, a consultation is the practical next step. Consult with a fertility specialist who can review your history, run the right assessments, and talk through a personalised plan. Contact BCCIVF to discuss your options before you begin.



