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This Aug. 15, 2019 file photo shows a marijuana plant in an indoor cannabis farm in Gardena, Calif. A survey released on Thursday, Sept. 5, 2019 says U.S. college students are using marijuana at the highest rates in 35 years. Marijuana use continues to be higher in college-age adults than any other age group. (AP Photo/Richard Vogel, File)

Marijuana sold in Michigan shops will have to have labels warning pregnant women and breastfeeding mothers about the health risks for their fetuses and infants under newly enacted laws.

Lt. Gov. Garlin Gilchrist signed the two bills Wednesday because Gov. Gretchen Whitmer was out of the state.

The labels must be placed on legal recreational and medical marijuana products.

They will warn that use by pregnant or breastfeeding women may result in fetal injury, preterm birth, low birth weight or development problems for children.

The laws also require that an informational pamphlet be made available at every point of sale.