Caffeine consumption should be limited during pregnancy and the UK guidelines suggest that pregnant women shouldn’t exceed 200 mg of caffeine per day. This is the equivalent of one really strong cup of coffee, two cups of instant coffee or three cups of tea (green tea also contains caffeine).
Remember that some fizzy drinks and chocolate will also contain caffeine and should be limited too. If you like to drink tea or coffee and want more than this during your pregnancy, you can choose a decaffeinated version.
Interestingly, many tea and coffee loving women report they completely go off their favourite drink during pregnancy and cannot bear to drink it. Instead, they opt for natural caffeine free teas like mint tea and chamomile tea. One theory is that morning sickness and pregnancy taste changes are natural defence systems that stop you consuming harmful substances in order to protect your developing foetus. This is especially important in the first trimester when the baby would be most susceptible to toxins and substances in food.
One evolutionary theory is that morning sickness and pregnancy taste changes are adaptive and act as a natural defence of the developing foetus that helps to limit a women’s consumption of potentially harmful substances. This is especially important in the first trimester when the baby would be most susceptible to toxins and substances in food.
There is cross-cultural evidence that pregnant women around the world favour bland, starchy foods and avoid stronger flavours which arguably may contain harmful compounds.