No girl should ever food that is severely restrict her pregnancy, no matter how much she weighs when she gets pregnant. All obstetricians recommend that a woman gain at least 20 pounds during her maternity, even she becomes pregnant if she weighs 300 pounds when.
In 1988, David Barker of the University of Southampton in England noticed that from the beginning of the century that is twentieth poor areas of England had an extremely high incidence of newborn babies dying and those that survived had a really high incidence of heart attacks later in life. He noticed that babies born to very poor women were little at birth. He concluded that when a mother is deprived of food during her pregnancy, she gives delivery to babies who are small at birth, and the ones who survive are in high risk for heart attacks many years later when they become adults.
Further research shows that little newborns from big parents are more likely to die in infancy than small infants from small parents. An infant who should have been born at 9 pounds because of big parents, but weights only 5 pounds at delivery, is the one most prone to perish and become sickly. A five pound infant whose parents were small was allowed to be about five pounds. So babies that are small since they're deprived of food into the uterus are the ones most likely to die in infancy and suffer heart attacks later in life.
Then study from the Amsterdam famine of 1942 showed that children who are deprived of food in the 1st three months of pregnancy are the ones almost certainly to suffer heart attacks as adults. However, study from the Stalingrad famine of 1942 showed that babies deprived of food in the uterus who don't become fat later in life are perhaps not at increased risk for heart attacks later on. The Amsterdam children had lots of food throughout their childhoods, while the Stalingrad babies continued to be starved for their whole childhoods because of this sluggish recovery of this Russian economy after World War II. The Amsterdam babies suffered heart attacks as grownups, as the Stalingrad babies did not.
Studies in the Philippines show that depriving a baby of food in the womb causes him or her to have blood that is high and high cholesterol later in life. We've established that when an infant is deprived of food in the womb and is given lots of food later on, he or she is at great risk for a heart attack. On the other hand, if a baby is starved in uterus and is not given lots of food later on, his risk for a heart attack is perhaps not increased. We now have to explain how depriving a baby of food within the womb and overfeeding him during youth causes heart attacks. There is certainly a huge body of research showing that starvation in the uterus shunts blood to the brain and away from the other organs, causing a child to be born with small liver, pancreas, kidneys and so forth. These organs do not function because well and when these babies are given food that is too much on, they have higher than normal levels of insulin and other hormones that constrict arteries to cause heart attacks. These infants have smaller kidneys which may well not manage to function as well, so when they do not get sufficient oxygen, produce too much renin that also constricts arteries to cause blood pressure that is high. High levels of insulin constrict arteries and cause heart attacks.
Therefore all women should gain at least 20 pounds if they are pregnant. If unborn babies do not get enough calories into the uterus, they shunt each of their calories to the brain and away from other organs in their health. They have actually tiny livers and kidneys. Small livers cannot remove insulin after meals, causing high insulin levels that constrict arteries and cause heart attacks. Small kidneys discharge chemical compounds to the bloodstream that constrict arteries to cause high blood pressure, and strokes.