 International Trade and Investment Agreements, TIAs, have been shown to limit government's ability to pass laws and regulate businesses in order to protect public health. This has resulted in fewer opportunities to introduce measures such as taxing unhealthy foods, restricting marketing of junk foods to children, and requiring healthier ingredients in processed foods. These limitations are due to the fact that TIAs often contain provisions that prohibit countries from imposing any measure, that would unfairly disadvantage foreign companies. Additionally, these agreements often require countries to provide advance notice before implementing new regulations, giving companies enough time to challenge them in court. As a result, many countries have been unable to pass legislation that would improve their citizens' diets and reduce rates of obesity, and other chronic diseases. This article was authored by Kelly Garten, and Marie Thoe, and Boyd Swinburne.