A baby grows very fast and needs a vast amount of nutrients (vitamins, minerals etc). Have a diet which supplies these. The best foods are those that are alive. This means food from the following four groups:- fruit, vegetables, seeds and nuts (not roasted or salted). The very best sources of these are organic foods which contain higher levels of nutrients. Keep sugar and white flour products and processed foods low.

Baby’s brain grows very rapidly in pregnancy and brains are mainly made up of fat. This means having good quality fats (essential fats) in the diet and reducing bad fats. The main sources of essential fats are oily fish, such as mackerel, sardines, herrings, wild salmon and pilchard, seeds such as sunflower seeds, pumpkin seeds, linseeds) and nuts (unroasted). Eating nuts in pregnancy also lowers the risk of a baby with nut allergy (which is increasing).

Keep low on hydrogenated fats, (also called trans fats, vegetable fat, shortenings) as these unnatural fats are harmful to the body and compete with essential fats. These are mainly found in margarines, supermarket cooking oils (except olive oil) but they are also commonly found in many processed foods such as biscuits, cakes and mayonnaise.

There are stories of mothers who breast feed and baby can’t seem to get enough milk. This is usually because the mother is short of essential fats.

Drinking more than 4 cups of coffee makes pre-eclampsia 60% more likely.

Milk has a high hormone content and this may explain why milk drinkers were found to have a five-fold higher rate of twins compared to non-milk drinkers in one study.

Some foods such as luncheon meats, hot dogs and soft cheeses (brie, feta, camembert and blue veined cheeses) carry a higher risk of listeria which can cause miscarriage and abnormalities in the baby. Although a rare disease, these foods are best avoided.

A good diet reduces the risk of malformations. One study found that those who had a varied diet, low in processed food, in pregnancy had a 51% lower chance of having a baby with anencephaly and a 34% lower chance of having a baby with a hair lip.


          Mobile phones and pads give off electromagnetic radiation with known harmful effects. These dangers have increased as phones have got smarter. For instance there are 38 cases of breast cancer reported in young women who kept their phone in their bra. This gives an indication of how dangerous they can be when held close to the body.

But the foetus is at much greater risk because rapidly growing tissue, particularly the brain, is extremely vulnerable to electromagnetic radiation. Mobile radiation disrupts hormones and two studies have found it increases the risk of miscarriage. Rats exposed to mobile radiation in utero found it three times more difficult to get out of a maze suggesting long-term brain damage. Mice exposed in mobile radiation in the womb became more hyperactive, more anxious with reduced memory and reduced fear.

 Today mobiles, because they are used so much, are a major hazard in pregnancy and the smarter the phone the more danger. Even small bursts can be harmful. Keep them far from baby and switch off the wifi setting wherever possible as having this setting on increases the harmful effects. Other electrical fields can be harmful: never use electric blankets for instance.


Babies, unlike us, have virtually no way of eliminating toxins from their systems. Mothers living near toxic waste dumps were found to be one third more likely to have babies with congenital abnormalities. Pesticides used in the home have been associated with childhood cancer. Don’t paint baby’s bedroom at this time. A study from University of California found mums who were exposed to paint before conception or during pregnancy were 3 times more likely to have children who developed acute lymphoblastic leukaemia. Flea treatments for pets used during pregnancy can increase the chance of autism. So keep your exposure to chemicals, additives in foods, cigarettes, alcohol, hair dyes, dental fillings and anything unnatural to the minimum. Avoid using pesticides, use organic foods where possible, avoid air fresheners and doing DIY jobs with chemicals and keep plastics off your food, especially if microwaving. Regular use of standard hair sprays doubled the risk of birth defects in the urinary tract in one study (anything you inhale or put on your skin goes straight into your body).

Avoid smoking which involves inhaling at least 50 toxic chemicals and keep alcohol intake as low as possible.

Nearly all chemicals are stored in the fat and will therefore pass into breast milk (350 chemicals at the last count) and are also present in cow’s milk formula feeds. It is best to avoid dieting in pregnancy or whilst breast feeding as this adds to baby’s toxic exposure by releasing chemicals from fat stores.


This is an increasing problem, and carries with it the risk of later heart disease and diabetes. Animal studies have shown that the most effective way of producing obesity is to give poor quality food in pregnancy followed by overfeeding immediately after. Overfeeding a baby has a much bigger impact on obesity than overfeeding later in life. It is better to breast feed as overfeeding is more difficult (but not impossible). Bottle fed babies are at much greater risk from overfeeding as the standard charts are based on formula fed babies who are probably overweight. If you breast-feed then avoiding topping up with a bottle. Unfortunately this practice is sometimes encouraged by health professionals. To sum up: eat the best quality food in pregnancy and avoid overfeeding after the pregnancy. Remember: overfeeding is almost always more harmful than underfeeding.


You need more nutrients in pregnancy than any other time.

We now know that folic acid protects against spina bifida. It makes sense to have a supplement of this. This can be prescribed.

Vitamin D is a key supplement and the current recommendation of 400iu daily is almost certainly set too low (it is 2000iu daily in Canada). A fascinating 30 year study from Finland showed that taking 2000iu Vitamin D in pregnancy reduced the rate of type 1 diabetes in their children by 80%. A study of 500 women who took between 2000 and 4000 units of Vitamin D found no adverse effects and the women who took 4000 units had the lowest rates of premature labour, premature birth and infection.

Other nutrients are important in pregnancy. Deficiencies of vitamins B1, B2, B6, zinc, iron, calcium and magnesium have all been linked with birth defects as have excesses of lead, cadmium and copper (good levels of nutrients protect against these.)

In one study it was shown that by taking a multi-vitamin, multi-mineral supplement you can reduce the risk of pre-term delivery by a quarter (starting at beginning of pregnancy). The chance of a low birth weight baby is reduced by a half. There are some multi-vitamin/multi-mineral supplements specifically formulated for pregnancy. These are available in health food shops. Vitamins C and E reduce the risk of pre-eclampsia. Avoid Vitamin A in doses of more than 10,000 units per day. Avoid cod-liver oil and fish oils which often contain PCBs and other chemicals.

Iodine is a key nutrient in pregnancy as it is critical for brain development. Iodine used to be added to salt and bread but this is not done any longer in the UK so it is very difficult to get enough in the diet although there is some iodine in fish like herring & mackerel and some in yoghurt and milk. The optimum dose is 2-3mg daily but levels of up to 15mg daily are okay (see leaflet on iodine for more information). Mothers taking extra iodine typically have children with higher IQs, sometimes 20 points above their parents!


There is now an epidemic of asthma and eczema in our children. How do we avoid this? If there is any history of allergy in the family consider these measures. There is good evidence that breast feeding for 4 to 6 months will help. Eating a variety of foods in pregnancy also helps. For instance peanut allergy is less common in populations that eat peanuts routinely in pregnancy. There is some evidence that using paracetomol in pregnancy makes asthma more likely.


Children that have cow’s milk as formula feeds have a 50-60% greater risk of insulin dependent (Type 1) diabetes. Although this risk is not large, the risk is much greater for those with a family history of diabetes (about 12 times greater). Because of this the American Academy of Paediatricians have advised that children in these families should not have cow’s milk formula feeds or cow’s milk in the first 2 years of life.


Breast-fed babies have lower rates of chest, gut and ear infections, probably due to oligosaccharides in the milk which boost immunity. Breast-feeding adds 3 to 5 points to intelligence (IQ) and this persists for at least 15 years. As adults they have lower rates of allergies, inflammatory bowel disease, lymphomas, asthma and juvenile onset diabetes. They are also less prone to obesity. Bottle fed babies are more sickly and visit a GP 20 times more frequently than breast-fed babies in the first year of life in some studies. Mothers who breast-feed have lower rates of ovarian and breast cancer and children who have been breast-fed for 6 months have a lower risk of leukaemia and lymphoma.

However breast-feeding is not easy. It’s better for baby but worse for mum. The biggest problem for mums who want to breast feed is that it can take weeks for breast feeding to become fully established. It’s best to avoid using bottle feeds during this time as it interferes with the breast feeding and baby may even not want the breast. The key here is patience.