Question: prevention of preeclampsia I know that the jury is out on the exact causes of preeclampsia, but I am looking for some of the ways that the chances of acquiring it can be minimized.

Reference:
 Preeclampsia Overview Preeclampsia is a pregnancy complication characterized by high blood pressure and signs of damage to another organ system, most often the liver and kidneys. Preeclampsia usually begins after 20 weeks of pregnancy in women whose blood pressure had been normal. Even a slight rise in blood pressure may be a sign of preeclampsia. Left untreated, preeclampsia can lead to serious - even fatal - complications for both you and your baby. If you have preeclampsia, the only cure is delivery of your baby. If you're diagnosed with preeclampsia too early in your pregnancy to deliver your baby, you and your doctor face a challenging task. Your baby needs more time to mature, but you need to avoid putting yourself or your baby at risk of serious complications. Symptoms Preeclampsia sometimes develops without any symptoms. High blood pressure may develop slowly, or it may have a sudden onset. Monitoring your blood pressure is an important part of prenatal care because the first sign of preeclampsia is commonly a rise in blood pressure. Blood pressure that exceeds 140/90 millimeters of mercury (mm Hg) or greater - documented on two occasions, at least four hours apart - is abnormal. Other signs and symptoms of preeclampsia may include: - Excess protein in your urine (proteinuria) or additional signs of kidney problems - Severe headaches - Changes in vision, including temporary loss of vision, blurred vision or light sensitivity - Upper abdominal pain, usually under your ribs on the right side - Nausea or vomiting - Decreased urine output - Decreased levels of platelets in your blood (thrombocytopenia) - Impaired liver function - Shortness of breath, caused by fluid in your lungs Sudden weight gain and swelling (edema) - particularly in your face and hands - may occur with preeclampsia. But these also occur in many normal pregnancies, so they're not considered reliable signs of preeclampsia. Make sure you attend your prenatal visits so that your care provider can monitor your blood pressure. Contact your doctor immediately or go to an emergency room if you have severe headaches, blurred vision or other visual disturbance, severe pain in your abdomen, or severe shortness of breath. Because headaches, nausea, and aches and pains are common pregnancy complaints, it's difficult to know when new symptoms are simply part of being pregnant and when they may indicate a serious problem - especially if it's your first pregnancy. If you're concerned about your symptoms, contact your doctor. Causes The exact cause of preeclampsia involves several factors. Experts believe it begins in the placenta - the organ that nourishes the fetus throughout pregnancy. Early in pregnancy, new blood vessels develop and evolve to efficiently send blood to the placenta. In women with preeclampsia, these blood vessels don't seem to develop or function properly. They're narrower than normal blood vessels and react differently to hormonal signaling, which limits the amount of blood that can flow through them. Causes of this abnormal development may include: - Insufficient blood flow to the uterus - Damage to the blood vessels - A problem with the immune system - Certain genes Preeclampsia is classified as one of four high blood pressure disorders that can occur during pregnancy. The other three are: - Gestational hypertension. Women with gestational hypertension have high blood pressure but no excess protein in their urine or other signs of organ damage. Some women with gestational hypertension eventually develop preeclampsia. - Chronic hypertension. Chronic hypertension is high blood pressure that was present before pregnancy or that occurs before 20 weeks of pregnancy. But because high blood pressure usually doesn't have symptoms, it may be hard to determine when it began. - Chronic hypertension with superimposed preeclampsia. This condition occurs in women who have been diagnosed with chronic high blood pressure before pregnancy, but then develop worsening high blood pressure and protein in the urine or other health complications during pregnancy. Risk factors Preeclampsia develops only as a complication of pregnancy. Risk factors include: - History of preeclampsia. A personal or family history of preeclampsia significantly raises your risk of preeclampsia. - Chronic hypertension. If you already have chronic hypertension, you have a higher risk of developing preeclampsia. - First pregnancy. The risk of developing preeclampsia is highest during your first pregnancy. - New paternity. Each pregnancy with a new partner increases the risk of preeclampsia more than does a second or third pregnancy with the same partner. - Age. The risk of preeclampsia is higher for very young pregnant women as well as pregnant women older than 40. - Obesity. The risk of preeclampsia is higher if you're obese. - Multiple pregnancy. Preeclampsia is more common in women who are carrying twins, triplets or other multiples. - Interval between pregnancies. Having babies less than two years or more than 10 years apart leads to a higher risk of preeclampsia. - History of certain conditions. Having certain conditions before you become pregnant - such as chronic high blood pressure, migraines, type 1 or type 2 diabetes, kidney disease, a tendency to develop blood clots, or lupus - increases your risk of preeclampsia. - In vitro fertilization. Your risk of preeclampsia is increased if your baby was conceived with in vitro fertilization. Complications The more severe your preeclampsia and the earlier it occurs in your pregnancy, the greater the risks for you and your baby. Preeclampsia may require induced labor and delivery. Delivery by cesarean delivery (C-section) may be necessary if there are clinical or obstetric conditions that require a speedy delivery. Your obstetric provider will assist you in deciding what type of delivery is correct for your condition. Complications of preeclampsia may include: - Fetal growth restriction. Preeclampsia affects the arteries carrying blood to the placenta. If the placenta doesn't get enough blood, your baby may receive inadequate blood and oxygen and fewer nutrients. This can lead to slow growth known as fetal growth restriction, low birth weight or preterm birth. - Preterm birth. If you have preeclampsia with severe features, you may need to be delivered early, to save the life of you and your baby. Prematurity can lead to breathing and other problems for your baby. Your health care provider will help you understand when is the ideal time for your delivery. - Placental abruption. Preeclampsia increases your risk of placental abruption, a condition in which the placenta separates from the inner wall of your uterus before delivery. Severe abruption can cause heavy bleeding, which can be life-threatening for both you and your baby. - HELLP syndrome. HELLP - which stands for hemolysis (the destruction of red blood cells), elevated liver enzymes and low platelet count - syndrome is a more severe form of preeclampsia, and can rapidly become life-threatening for both you and your baby. Symptoms of HELLP syndrome include nausea and vomiting, headache, and upper right abdominal pain. HELLP syndrome is particularly dangerous because it represents damage to several organ systems. On occasion, it may develop suddenly, even before high blood pressure is detected or it may develop without any symptoms at all. - Eclampsia. When preeclampsia isn't controlled, eclampsia - which is essentially preeclampsia plus seizures - can develop. It is very difficult to predict which patients will have preeclampsia that is severe enough to result in eclampsia. Often, there are no symptoms or warning signs to predict eclampsia. Because eclampsia can have serious consequences for both mom and baby, delivery becomes necessary, regardless of how far along the pregnancy is. - Other organ damage. Preeclampsia may result in kidney, liver, lung, heart, or eyes, and may cause a stroke or other brain injury. The amount of injury to other organs depends on the severity of preeclampsia. - Cardiovascular disease. Having preeclampsia may increase your risk of future heart and blood vessel (cardiovascular) disease. The risk is even greater if you've had preeclampsia more than once or you've had a preterm delivery. To minimize this risk, after delivery try to maintain your ideal weight, eat a variety of fruits and vegetables, exercise regularly, and don't smoke. Diagnosis To diagnose preeclampsia, you have to have high blood pressure and one or more of the following complications after the 20th week of pregnancy: - Protein in your urine (proteinuria) - A low platelet count - Impaired liver function - Signs of kidney trouble other than protein in the urine - Fluid in the lungs (pulmonary edema) - New-onset headaches or visual disturbances Previously, preeclampsia was only diagnosed if high blood pressure and protein in the urine were present. However, experts now know that it's possible to have preeclampsia, yet never have protein in the urine. A blood pressure reading in excess of 140/90 mm Hg is abnormal in pregnancy. However, a single high blood pressure reading doesn't mean you have preeclampsia. If you have one reading in the abnormal range - or a reading that's substantially higher than your usual blood pressure - your doctor will closely observe your numbers. Having a second abnormal blood pressure reading four hours after the first may confirm your doctor's suspicion of preeclampsia. Your doctor may have you come in for additional blood pressure readings and blood and urine tests. Tests that may be needed If your doctor suspects preeclampsia, you may need certain tests, including: - Blood tests. Your doctor will order liver function tests, kidney function tests and also measure your platelets - the cells that help blood clot. - Urine analysis. Your doctor will ask you to collect your urine for 24 hours, for measurement of the amount of protein in your urine. A single urine sample that measures the ratio of protein to creatinine - a chemical that's always present in the urine - also may be used to make the diagnosis. - Fetal ultrasound. Your doctor may also recommend close monitoring of your baby's growth, typically through ultrasound. The images of your baby created during the ultrasound exam allow your doctor to estimate fetal weight and the amount of fluid in the uterus (amniotic fluid). - Nonstress test or biophysical profile. A nonstress test is a simple procedure that checks how your baby's heart rate reacts when your baby moves. A biophysical profile uses an ultrasound to measure your baby's breathing, muscle tone, movement and the volume of amniotic fluid in your uterus. Treatment The only cure for preeclampsia is delivery. You're at increased risk of seizures, placental abruption, stroke and possibly severe bleeding until your blood pressure decreases. Of course, if it's too early in your pregnancy, delivery may not be the best thing for your baby. If you're diagnosed with preeclampsia, your doctor will let you know how often you'll need to come in for prenatal visits - likely more frequently than what's typically recommended for pregnancy. You'll also need more frequent blood tests, ultrasounds and nonstress tests than would be expected in an uncomplicated pregnancy. Medications Possible treatment for preeclampsia may include: - Medications to lower blood pressure. These medications, called antihypertensives, are used to lower your blood pressure if it's dangerously high. Blood pressure in the 140/90 millimeters of mercury (mm Hg) range generally isn't treated. Although there are many different types of antihypertensive medications, a number of them aren't safe to use during pregnancy. Discuss with your doctor whether you need to use an antihypertensive medicine in your situation to control your blood pressure. - Corticosteroids. If you have severe preeclampsia or HELLP syndrome, corticosteroid medications can temporarily improve liver and platelet function to help prolong your pregnancy. Corticosteroids can also help your baby's lungs become more mature in as little as 48 hours - an important step in preparing a premature baby for life outside the womb. - Anticonvulsant medications. If your preeclampsia is severe, your doctor may prescribe an anticonvulsant medication, such as magnesium sulfate, to prevent a first seizure. Bed rest Bed rest used to be routinely recommended for women with preeclampsia. But research hasn't shown a benefit from this practice, and it can increase your risk of blood clots, as well as impact your economic and social lives. For most women, bed rest is no longer recommended. Hospitalization Severe preeclampsia may require that you be hospitalized. In the hospital, your doctor may perform regular nonstress tests or biophysical profiles to monitor your baby's well-being and measure the volume of amniotic fluid. A lack of amniotic fluid is a sign of poor blood supply to the baby. Delivery If you're diagnosed with preeclampsia near the end of your pregnancy, your doctor may recommend inducing labor right away. The readiness of your cervix - whether it's beginning to open (dilate), thin (efface) and soften (ripen) - also may be a factor in determining whether or when labor will be induced. In severe cases, it may not be possible to consider your baby's gestational age or the readiness of your cervix. If it's not possible to wait, your doctor may induce labor or schedule a C-section right away. During delivery, you may be given magnesium sulfate intravenously to prevent seizures. If you need pain-relieving medication after your delivery, ask your doctor what you should take. NSAIDs, such as ibuprofen (Advil, Motrin IB, others) and naproxen sodium (Aleve), can increase your blood pressure. 

Answer: Experts believe preeclampsia begins in the placenta. Early in pregnancy, new blood vessels develop  to  send blood to the placenta. In women with preeclampsia, these blood vessels don't to develop or function properly: they are narrower than normal and react differently to hormones. Causes of this abnormal development include: insufficient blood flow to the uterus, damage to the blood vessels, problems with the immune system, or certain genes.