Does it matter if I am underweight pregnancy?
Women who have too little body fat can find that their oestrogen levels fall and this can lead to their periods becoming irregular or stopping altogether. So, if your BMI is under 20, you need to find a way to put on some weight in order to restore your hormonal balance. Talk to a nutritionist and/or a counsellor if you need help with this.
Furthermore, it is important to develop good dietary habits before you become pregnant because once you do conceive, the first three months of the pregnancy are critical in the development of your baby. That is when all the building blocks are put in place for your baby’s organs, including bones, heart, and brain, so your body needs to be able to nourish the developing fetus. find out more: bmi and body shape A woman’s weight can be a significant cause of fertility problems. The best way to determine whether you are underweight or overweight is to calculate your body mass index (BMI), which is used by health professionals to determine whether or not an individual’s weight falls within acceptable limits. This is done using a simple formula (see below). The ideal BMI is between 20 and 25; outside this range your weight could be having a negative effect on your fertility. There is no hard and fast rule about what level your BMI needs to reach for it to start to impact on your chances of getting pregnant, but these figures should act as a guide to help you see if you could have a weight problem.
To find your BMI, divide your weight in kilos by the square of your height in metres. Here is a calculation for a woman who is 1.7m (5ft 7in) tall, weighing 65kg (9st 111b): 1.7×1.7 = 2.89 65kg divided by 2.89 = 22.5 Her BMI is 22.5 and therefore falls within the acceptable range.
Weight is used in the calculation of body mass index and helps to establish whether or not fertility might be at risk.