![]() Pregnancy for women with a 30+ BMI is often associated with problems such as maternal diabetes, high blood pressure, big babies and increased risk of caesarean section. Having a BMI greater than 30 can reduce fertility by 50%. Risk of miscarriage is also increased in women with a low BMI. Excessive exercise can reduce body fat and increase muscle mass to a point where periods cease for the same reason. Risk of miscarriage is also increased in women with a low BMI.īeing underweight: If a woman's BMI falls below 19, the body senses famine and ovulation is switched off to prevent the risk of having a baby with malnutrition. If a woman's BMI falls below 19, the body senses famine and ovulation is switched off to prevent the risk of having a baby with malnutrition. National Institute for Health & Care Excellence.Even in these modern times, nature knows best. Weight management before, during and after pregnancy.Centers for Disease Control and Prevention. Body mass index: Considerations for Practitioners.UK Chief Medical Officers' Physical Activity Guidelines.Oxford Handbook of Nutrition and Dietetics (3rd ed). Health matters: obesity and the food environment.Underweight and fertility when planning a pregnancy.National Institute for Health & Care Excellence. Obesity: identification, assessment and management.Speak to your GP or practice nurse for more information. People from certain Black and Asian backgrounds are at risk of certain health problems at a lower BMI than others.However, it’s still preferable to have a healthy BMI before becoming pregnant to reduce health risks to both you and your developing baby. Pregnant women gain weight as a result of their developing baby.Athletes and people with a lot of muscle may have a high BMI but actually not have much body fat.As we age, we tend to have more body fat and less muscle, so BMI may underestimate body fat in older people.Therefore, a child’s age and sex are taken into account when looking at their BMI. Girls and boys develop differently and have different amounts of body fat at different ages. ![]() There are some groups of people where a BMI result should be considered carefully, or where it may not even be helpful to use at all. If you suffer with an eating disorder, your nurse or GP will be able to support you to gain the right treatment.Īlthough, in general, BMI is a useful measure of whether or not you’re a healthy weight, it isn’t suitable for everyone. If your GP has any concerns about your health or wants to explore potential reasons for your weight loss, they may refer you for further tests or investigation. Talk to your practice nurse or GP for more advice. Good examples of nutrient-dense snacks include a handful of unsalted nuts, a pot of yogurt or peanut butter on toast. ![]() Aim for three balanced meals a day, making sure you eat enough carbohydrates and protein, with some healthy, nutrient-dense snacks in between. This includes how much energy (calories) you consume through food and how much energy your body uses. Your weight is determined by lots of factors. Being underweight is sometimes associated with health conditions such as osteoporosis and fertility problems. Different nutrients come from different foods some give you energy and others help your body to grow, repair itself and function properly. If you’re underweight, you may not be getting all the nutrients that your body needs. You’re in the underweight range, with a BMI score of under 18.5. ![]()
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