By Yvette Barton
Generally speaking you probably don’t have to go very far to find a woman who has given birth to a child after 35. The age at which women in Australia will have their first baby is increasing as many couple choose to achieve other goals first. Many celebrities have made headlines achieving a successful pregnancy after 40 – Halle Berry (at 41), Nicole Kidman (at 41), Geena Davis (twins at 48) and Kelly Preston (at 47) to name a few. However we can probably safely assume that due to money and influence these celebrities had at their disposal many forms or conception assistance which might not be so achievable for the average person. So then when considering natural conception what really are your chances of achieving a pregnancy after 35?
Chances of Pregnancy After 35
It might surprise you to know that your chances of achieving a successful pregnancy at or shortly after 35 are actually quite good, assuming there are no underlying fertility problems. The average 33 year old has about an 85 to 90 per cent chance of conceiving within 12 months of trying. This drops to about 70 per cent by the time she reaches 37. However by the time a woman reaches 40 her chance of achieving a pregnancy is down to around 45 to 50 per cent and continues to decline steeping after that.
The Impact of IVF Treatment
Of course with the advent of IVF some 25+ years ago, woman have had what appears to be an increased chance of conceiving a baby later in life. IVF has assisted many couples who would have otherwise had little chance of success, to conceive the baby (or babies) they longed for. However it is important to remember that however miraculous IVF procedures may be, age still impacts on your chances of success. At 35 years old the chance of a live-birth from one IVF cycle is around 30 to 40 per cent, and around 20 to 25 per cent at 38. By 40 you chance is only 15 to 20 percent per IVF cycle.
Causes of Declining Fertility
So why does our ability to conceive a child decrease with age? The answer is a simple one. Every woman is born into the world with all the eggs she will ever produce ready and waiting in her ovaries – about 400,000 in fact. During a healthy menstrual cycle, one of these eggs will mature and be released to possibly create a baby. As the years go by and your body ages, so do those eggs lying in wait.
Just like most of us are not in nearly as good condition at 35 as we were at 15 or even 25, so too neither are a woman’s eggs. As your eggs age they are less receptive to fertilisation and have less stored mitochondrial energy to drive the rapid cell division that occurs in the early days and weeks of an embryos life. This can consequently lead to a higher risk of miscarriage and chromosomal abnormalities. Men on the other hand continue to produce new sperm for many, many years after 35.
Other Points to Consider
Many women who set out to achieve a pregnancy after 35 will give birth to a healthy baby after a normal pregnancy. However there are a few considerations you need to keep in mind before attempting a pregnancy at this point in your life. After 35 women are at greater risk of fertility issues, miscarriage, stillbirth and infant chromosomal defects. In addition gestation diabetes or high blood pressure is more common in later pregnancies. Fatigue can also be more severe which can make working or caring for older children challenging.
Woman who give birth after 35 tend to have a higher rate of caesarean birth as well as a higher incidence of multiple births. That last one might seem more like a blessing than a risk but keep in mind that the human body was only ever intended to carry one baby at a time. Multiple birth carries with it greater risks of problems during pregnancy and birth including foetal distress, breech placement of one or both babies, premature birth and infant loss.
Maximising Your Chances
However it isn’t all bad news. As nerve wracking as attempting to achieve a pregnancy after 35 may seem it is most certainly possible if the conditions are right. Obviously if this will be your first child and you’d like to have more than one, you are likely to feel even more pressure to succeed. Making sound choices in terms of preconception care will undoubtedly increase your chance of success.
Counselling on preconception care is offered by most obstetricians and midwives in private practice. Your general practitioner may also be able to assist you, particularly if they routinely participate in shared maternal care with a local hospital. Some hospital-based midwifery units also offer preconception care information sessions you may wish to attend. There are some obvious lifestyle and wellbeing choices which will impact your chances so let’s explore them.
Drugs, Alcohol and Cigarettes
Everything you do to and put into your body reflects in every cell within your body. That is, if you engage in lifestyle habits that are unhealthy you are directly impacting your body’s health at the cellular level. Remember those eggs that you have carried since birth? They are affected too. Avoiding illicit drugs and alcohol and giving up smoking are the first fundamental steps to improving your chances of success. Seeking help to manage these issues always makes sense and there are many support agencies who are experts in the field and can help you make a change.
Health and Nutrition
No matter how old you are, the healthier your body is the better your chances will be of conceiving and the better start in life you will give your baby. The first most obvious step is eating a well balanced and nutritious diet. Consulting a midwife or doctor can arm you with the information you need to begin to improve your nutrition, as well as outlining key supplements that will help your body to function at its best.
In particular this will include eating a well-balanced, high fibre diet that is rich in fruits and vegetables. In addition taking folic acid helps to reduce the chance of some birth defects while also improving cellular health. Maintaining a healthy weight is also integral to conception success. If you are overweight or obese, consult your medical practitioner for advice on safely reducing your weight.
Human beings were not meant to be sedentary creatures. Our bodies and minds function best when our day includes a good dose of exercise. If you have never exercised in your life, the preconception months are the time to start. Just 20 minutes of structured exercise three times a week can help to improve muscle tone, maintain a healthy weight and relieve stress. All of these factors can do nothing but help your chances of conception success.
If you have a good dose of will power you might like to try using a DVD to help structure your exercise routine. Pilates, yoga, a not too strenuous aerobic workout, pick one which interests you and try it. If you feel that you require more motivation, or you would like the assurance of a qualified instructor, consider joining an exercise class or a gym which offers them. Picking something which you can continue during pregnancy is ideal and your doctor or midwife can give you pointers on the types of exercise which best match for individual needs and abilities.
If you have health issues such as diabetes, high blood pressure, chronic health problems or a sexually transmitted disease (STD) it will be important to work closely with your doctor or midwife to get answers to any questions you have. Depending on your condition you may need treatment to maximise your