Blues: Knowledge, trust, calm and honesty.
Aquas: Empathy, compassion, clarity and precision.
Greens: Growth, harmony and success.
To give us an idea of the overall feeling of your brand, let us know which styles you lean towards
This website is a similar product and incorporates food into the logo. https://allergytest.co/
Maybe provide some examples that are variants on the AllergyTest logo...
Please include some options that have a food image. (maybe a generic piece of fruit)
As for logo, something that has a professional feel, a "neutral" food item like a fruit or vegetable, and maybe some kind of reference to the fact that the food can be nice or evil! (angel and devil?) This is just one idea so please include others.