Pre-conception health: folic acid, vitamins and preparing your body
The weeks and months before you start trying for a baby are one of the most valuable windows for looking after your health. Small, well-timed changes can make a real difference to how your pregnancy begins, because some of the most critical stages of development happen before many people even know they are pregnant. This article draws on NHS guidance to walk you through the key steps: the right supplements to take, lifestyle habits worth adjusting, and when it makes sense to speak to your GP before conception.
Why folic acid timing matters so much
Folic acid is a B vitamin that plays a central role in the development of the neural tube, the structure that eventually forms the brain and spinal cord. The neural tube closes at around 28 days after conception, which is often before a pregnancy is confirmed and sometimes before a missed period has been noticed. Taking folic acid before you start trying means your levels are already where they need to be at that very early stage, giving the neural tube the best chance of forming correctly.
The standard recommendation from the NHS is 400 micrograms (mcg) of folic acid each day. You should begin as soon as you stop using contraception and continue through to the end of your 12th week of pregnancy. For some people, a higher dose of 5 milligrams is recommended instead. Your GP may advise this higher dose if you have diabetes, epilepsy or a BMI over 30, or if a previous pregnancy was affected by a neural tube defect such as spina bifida. If any of these apply to you, speak to your GP before you start trying so that you can get the right prescription in place.
Vitamin D and other nutrients to consider
Alongside folic acid, the NHS recommends 10 micrograms of vitamin D every day during pregnancy and breastfeeding. Starting this supplement before you conceive is a sensible approach, since it is difficult to obtain enough vitamin D from food alone, particularly through the autumn and winter months. Vitamin D supports healthy bone development and contributes to your own immune function throughout pregnancy.
For most people, a varied and balanced diet provides the remaining nutrients needed for a healthy pregnancy. However, if you follow a vegan diet, it is worth discussing vitamin B12 and iodine with your GP or a registered dietitian before trying to conceive, as these are harder to obtain from plant-based foods alone. Eating well in the months before pregnancy, with plenty of fruit, vegetables, wholegrains, protein and dairy or fortified alternatives, sets a strong foundation for the months ahead.
Lifestyle changes that support conception
There is no single action that guarantees a smooth path to pregnancy, but several lifestyle changes can improve your overall health and support your body as it prepares for conception. The NHS advises stopping smoking before you try to conceive, as smoking is associated with reduced fertility and a higher risk of complications during pregnancy. Alcohol is also best avoided: there is no established safe level of alcohol in early pregnancy, and since conception can happen before you realise it, cutting out alcohol when you stop contraception is the most cautious approach.
Being within a healthy weight range before pregnancy can make conception easier and reduce the risk of complications. If you are concerned about your weight in either direction, your GP can discuss options with you before you start trying. Gentle, regular physical activity is beneficial, and you do not need to follow any particular exercise plan as long as you are generally active and avoiding high-impact exercise that feels uncomfortable.
Reviewing medications and chronic conditions with your GP
If you have a long-term health condition or take regular medication, a pre-conception appointment with your GP is one of the most useful steps you can take. Some medications are not recommended during pregnancy and may need to be changed or adjusted before you start trying, so that any alternative treatment is already established and working well by the time you conceive. Conditions such as diabetes, epilepsy, thyroid disease and high blood pressure all benefit from careful management before and during pregnancy, and your GP or specialist can advise on the best approach for your specific situation.
Checking your immunity and screening history
Before trying for a baby, it is worth confirming that you are immune to rubella (German measles). Rubella infection in early pregnancy can cause serious complications for the baby. If you are not immune, your GP can arrange an MMR vaccination, though you will need to wait a short period after vaccination before trying to conceive. It is also worth checking that your cervical screening (smear test) is up to date, since any follow-up required is more straightforward before pregnancy than during it. Your GP surgery can tell you when your next screen is due.
Frequently asked questions
How much folic acid do I need before pregnancy?
400 micrograms (mcg) daily from the time you stop contraception until the end of the 12th week of pregnancy. If you have diabetes, epilepsy, a previous pregnancy affected by a neural tube defect, or a BMI over 30, your GP may recommend 5 milligrams instead.
When should I start taking folic acid?
Start as soon as you decide to try for a baby. Ideally begin at least a month before you start trying, because the neural tube forms very early in pregnancy, often before you know you are pregnant.
Do I need any other vitamins before pregnancy?
The NHS recommends vitamin D (10 micrograms daily) throughout pregnancy and breastfeeding. Starting before you conceive makes sense. Most other nutrients can come from a varied diet, but if you follow a vegan diet discuss vitamin B12 and iodine with your GP.
Should I have a pre-conception health check?
If you have a chronic condition such as diabetes, epilepsy, thyroid disease or high blood pressure, or if you take regular medication, a pre-conception appointment with your GP is worth arranging. Some medications are not recommended in pregnancy and may need to be reviewed or changed before you start trying.
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