It depends. If you have professional liability coverage (also known as errors and omissions insurance) as part of your overall policy, you are covered for claims of negligence, third-party bodily injuries, or accusations of wrongdoing related to the advice you provided. If you do not have that type of coverage in your policy, you are leaving yourself exposed to the risk of having to pay thousands of dollars in damages if you are successfully sued by one of your clients. insurance can provide you with a policy that covers both nutritional advice based on the Canada Food Guide, as well as coverage for certified nutritionists and dieticians.