IVF success rates can be a helpful guide, but they don’t tell the whole story. Every fertility journey is different, shaped by a unique mix of medical, biological, and lifestyle factors.
At Life Fertility, we believe the most meaningful conversations about success come from getting to know you – your circumstances, your history, and what matters most to you.
Factors That Can Affect IVF Success Rates
Age and Egg Quality
Age is one of the strongest influences on IVF outcomes. Egg quality and quantity change naturally over time, which can affect fertilisation, embryo development, and implantation. These changes occur at different rates for different individuals.
Underlying Fertility Factors
IVF outcomes are shaped by each person’s medical background, which may include ovarian reserve and hormone levels, endometriosis or other pelvic conditions, male factor infertility, uterine or tubal factors, and genetic or chromosomal considerations. Many people experience more than one contributing factor, which is why outcomes can vary even when similar treatments are used.
Previous Fertility Treatment
Some patients pursue IVF after previous fertility treatment, including one or more unsuccessful IVF cycles. Previous treatment history can influence future outcomes, but it can also provide valuable information to guide further care. For some people, seeking a second opinion can help clarify options, refine treatment planning, or provide reassurance.
Lifestyle and General Health
Overall health and lifestyle can play a supporting role in IVF outcomes. Factors that may influence fertility treatment include smoking or vaping, alcohol or recreational drug use, body weight and metabolic health, nutrition and physical activity, sleep quality, and stress levels. Where appropriate, addressing these areas may form part of a broader, individual approach to care.
Looking Beyond Averages
Success rates look at outcomes across many patients, but every fertility journey is different. Individual medical histories, personal circumstances, and treatment choices all play an important role.
That’s why our fertility specialists focus on getting to know you — your story, your needs, and your goals — before discussing what success may look like for you. Book an appointment to have a personalised conversation with our team.
A Message From Our Medical Director
I know that looking at IVF success rates can feel overwhelming — especially when you’re already carrying hope, uncertainty, and many questions.
Every person who comes to Life Fertility has their own story, medical history, and reasons for seeking care. That’s why outcomes in fertility treatment can vary so much, and why a single number can never describe an individual journey.
Over the past year, Life Fertility has welcomed renewed clinical leadership and a refreshed clinical team. We’ve taken the time to carefully review how we assess, plan, and deliver care, guided by current evidence and thoughtful clinical decision making. We closely monitor outcomes and continually refine our approach, and it has been encouraging to see positive improvements over the last 12 months as part of this ongoing work.
Most importantly, my focus is on making sure patients feel listened to, supported, and well informed — with care that is tailored to them, not defined by averages. Those conversations matter, and they are at the heart of what we do.
Dr Devini Ameratunga is the Medical Director at Life Fertility Clinic. She is a fellowship trained Fertility Specialist and Gynaecologist with advanced training in reproductive endocrinology and infertility, and a strong commitment to evidence based, compassionate fertility care.
Frequently Asked Questions About IVF Success Rates
Why do IVF success rates vary so much between individuals?
IVF outcomes are influenced by many factors, including age, medical history, fertility diagnosis, previous treatment, and overall health. Because these factors differ from person to person, outcomes can vary even when similar treatment approaches are used.
Do IVF success rates predict my personal chance of success?
Success rates describe outcomes across large groups of patients and cannot predict what will happen for any one individual. A personalised assessment is the best way to understand how IVF may relate to your specific circumstances.
Does having previous unsuccessful IVF mean IVF won’t work for me?
Not necessarily. Many people pursue IVF after previous unsuccessful treatment. A prior IVF history can influence future outcomes, but it also provides valuable information that may guide further care or a different approach. For some patients, a second opinion can be helpful.
Can lifestyle changes really make a difference?
Lifestyle and general health can play a supporting role in fertility treatment. While changes such as improving nutrition, stopping smoking, or addressing sleep and stress may not resolve all fertility challenges, they can support overall reproductive health and may form part of an individual treatment plan.
Why is it important to look beyond a single success rate?
Fertility treatment involves many decisions and personal factors along the way, and success cannot be captured by one number alone. Outcomes are best understood alongside individual goals, medical history, and treatment choices.
Who should I talk to if I have questions about IVF success rates?
If you have questions or concerns about IVF outcomes, the most helpful next step is a personal conversation. Speaking with a Fertility Specialist allows you to discuss your individual situation, options, and expectations in a supportive environment.