Last week, former football star Joe Montana announced a massive investment in Caliva, a California-based cannabis business. Montana is among an unspecified number of investors who are putting forward a total of $75 million to help grow the already thriving company.

Montana says he believes in the healing properties of the plant that it is a potential solution for the opiate crisis as well.

Montana said in a statement:

"As an investor and supporter, it is my opinion that Calvia's strong management team will successfully develop and bring to market quality health and wellness products that can provide relief to many people and make a serious impact on opiate use or addiction."