A new study is warning about the effects of jet lag and working night shifts. Researchers said they discovered "profound disruption" to more than 1,000 genes in the body when a person becomes sleep-deprived or their sleep schedule is suddenly altered.

Jenna Lee discussed the findings with Dr. Marc Siegel, host of Sunday Housecall. He said he's worried from a "human health" standpoint about the extent to which human genes are impacted by sleep disruptions.

For people who work night or overnight hours, Siegel said it's very important to maintain a regular pattern as much possible.

"Have your coffee at the same time. Keep your patterns as much as possible because long-term sleep deprivation and alteration can cause risks of obesity, diabetes and heart disease. These are major, major risks," he said.

Watch the discussion above.