Wives who pack on the pounds may be hazardous to their hubby’s health, according to a new study.

Researchers found that middle-aged men who have obese wives are at greater risk of developing Type 2 diabetes.

They pointed to a shared lifestyle — including poor diet and exercise habits — and fatter women negatively influencing their partners’ eating and activity patterns as being behind the correlation.

The results were presented this week at the 2017 European Association for the Study of Diabetes Annual Meeting in Lisbon, Portugal, according to Medscape Medical News.

“There is the regular question — whether your parents or a sibling have diabetes — and this study calls attention that there are [also] other connections within the family” that could be a factor in diabetes risk, said Adam Hulman, of Aarhus University in Denmark, who led the study.

He added, “If you find that the spouse has obesity, pay attention on the other half of the couple.”

Hulman and Danish scientists took a look at 3,500 English couples over the age of 50 and tracked their weight and health every two-and-a-half years between 1998 and 2015.

They found that for every additional five points a woman increased in the body mass index scale, her husband’s risk of developing Type 2 diabetes was 21 percent higher.

“One explanation could be that at the end of the 1990s in the UK, women were more responsible for or the ones who determined the diet of the family or the household,” Hulman said.

Researchers did not find the same findings in reverse situations — obese hubbies had no adverse effect on their wives developing the chronic condition.

In a further study, individuals over age 55 living with a spouse with Type 2 Diabetes were more likely to be obese than those with no spousal diabetes.

“Recognizing shared risk between spouses may improve diabetes detection and motivate couples to increase collaborative efforts to eat more healthily and boost their activity levels,” the study’s authors said in a press release. “Obesity or [Type 2 diabetes] in one spouse may serve as a prompt for diabetes screening and regular weight checks in the other. In particular, men whose wives are obese may benefit from being followed more closely.”