Inclusion Criteria:  Aged 60-85 years Meets criteria for possible mild cognitive impairment Telephone MoCA Score of greater than 12 Reports interest in participating in the described nutrition intervention English speaking Has internet access with video conferencing capability and access to a computer, iPad, or other tablet.  Exclusion Criteria:  Major, unstable health or psychiatric conditions, including: Type 1 diabetes, major neurocognitive disorders, schizophrenia, bipolar I disorder, or active psychosis Under-weight based on BMI Prescribed medications that may interact with ability to adhere to KN, including: insulin, monoamine oxidase inhibitors (MAOIs), or immunosuppressants Deemed unable to provide consent based on telephone cognitive screener with a licensed psychologist.