Fathers’ obesity linked to health risks in their children.

A new study has suggested that a father’s obesity is one factor that may influence his offspring’s health and raise the risk of certain diseases such as cancer or diabetes.
The study, which appears Feb. 6 in the journal Medicine, is the first in humans to show that paternal obesity may alter a in the next generation, suggesting that a father’s may be transmitted to his children.

The research from the Duke Cancer Institute investigated the link of in particular obesity in parents prior to conception.

Researchers have traditionally focused on pregnant women as studies have shown that nutrition and environmental factors during pregnancy can affect children’s health and may raise their risk of . However, this study investigated the impact of paternal factors on children.

The Duke research team sought to determine associations between obesity in parents and changes in at the insulin-like growth factor 2 (IGF2) gene among offspring. regulates the activity of certain genes, which can reflect a higher risk for some diseases. Decreased at the IGF2 gene has been associated with an increased risk of developing certain cancers, including colorectal and .

“Our genes are able to adapt to our environment. However, we adjust in a way that may be problematic later,” said Cathrine Hoyo, PhD, MPH, a cancer epidemiologist at Duke Medicine and the study’s senior author. “It is not a change in the sequence of the DNA itself, but how genes are expressed. Some genes may get ‘shut off’ as a result of environmental trauma.”

Researchers followed families enrolled in the Newborn Study (NEST), a research program developed by Hoyo and funded by the to test the influence of on genetic profiles in .

Information was gathered about mothers and fathers using questionnaires and and the DNA from the umbilical cords of 79 to determine potential associations between the offspring’s patterns and parental obesity before conception was examined.

at the IGF2 gene in the offspring of obese fathers was significantly lower than in the children of fathers who were not obese. This suggests that paternal obesity may be associated with an increased risk of children developing certain cancers.

The researchers noted that the changes in could have been a result of something related to obesity, such as eating a certain diet or having diabetes, that was not measured in this study; however, the health impact on children is clear.

“This study is an important start in looking at the effects of environmental exposure on children, not only through the mother but also through the father,” said Soubry. “Although we cannot define at this point which obesity-related factor may cause an epigenetic effect, we measured in this study a significant association between paternal obesity and aberrant methylation profiles in the offspring.

The study confirms the influence and importance of and how a child’s future health may be impacted.

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