Drinking a lot of caffeine in pregnancy has been linked to miscarriage and low birth weight so the current advice is to limit your caffeine intake to no more than 200mg a day during your pregnancy.
Some people think that the stress of quitting smoking is worse for the baby than continuing to smoke, but this is not true. Stopping smoking is the best thing you can do to help your baby grow and develop well in the womb.
It's also a very expensive habit. Use our smoking calculator to see what you can buy when you quit.
NICE (2010), Dietary interventions and physical activity interventions for weight management before, during and after pregnancy, Public health guidance 27, 2010
