You cannot completely banish these foods from your life, but certainly you can reduce their consumption.
The omega-3 fatty acids in walnuts, salmon and chia seeds when broken down after eating, they release cancer-fighting molecules.
If you have a good source of pure milk and cream, then preparing Ghee at home is the best thing. If you don’t get time to prepare Ghee at home, then don’t make the mistake of purchasing it from an unreliable shop. We have not one but many reasons for