heart disease. In addition, these offspring had higher levels of glucose and insulin, which indicate development of type 2 diabetes. The rats were studied through adulthood and were found to be fatter than the offspring whose mothers ate healthier. This study showed that the diet of mothers not only affects the offspring's chemical physiology but also their likelihood of becoming even more unhealthy through their natural preference to bad habits. Paternal obesity effects on the fetus Researchers from the NIH's National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) conducted a study and found that early-onset paternal obesity is connected with an increased risk of liver disease in their kin. Researchers found that obese fathers had an elevated level of serum alanine aminotransferase (ALT), a liver enzyme, compared to fathers who were not obese. They did a secondary analysis that excluded obese offspring. Children who were a normal weight but had obese fathers still had elevated ALT levels, which indicated that a child's ALT levels are not dependent upon the child's own BMI. Obesity effects on the mother Disease Obese women have an increased risk of pregnancy-related complications, including hypertension, gestational diabetes, and blood clots. Also, the mother is at risk of going into preterm labor. Maternal obesity is also known to be associated with increased rates of complications in late pregnancy such as cesarean delivery, and shoulder dystocia. A meta-analysis estimated that Cesarean delivery rates increased with odds ratios of 1.5 among overweight, 2 among obese, and 3 among severely obese women, compared with normal weight pregnant women. In addition, morbidly obese women who have not had children before are at increased risk of all–cause preterm deliveries. It is well recognized that obese women are at increased risk of preeclampsia and that women who have never been pregnant are at higher risk of preeclampsia than women who have had children in the past. Obesity in pregnancy is also known to be associated with hyperinsulinemia, dyslipidemia, impaired endothelial function, and up-regulated markers of inflammation. Effects of negative diets Poor glycemic control can lead to neural tube defects. The usual increase in insulin resistance seen in late pregnancy is enhanced in obese mothers, causing a postprandial increase in glucose, lipids, and amino acids, as well as excessive fetal exposure to fuel sources. This, in turn, increases fetal size, fat storage, and potential risk for disease. For mothers, impaired glucose tolerance