If your Cortisol level increases day by day, then maintain the cortisol with some foods which are very healthy for our health. These foods are as below:
Herbal Tea: It is scientifically proven, herbal tea is very useful to manage anxiety and depressive symptoms.
Avocados: it is a rich source of omega-3 fatty acids that helps to reduce stress.
Milk: Lactium is found in milk that helps to reduce stress and cortisol
Kimchi, Matcha powder, garlic, etc. is very useful if you want to reduce your stress and cortisol. All these foods are natural, hence there is no side effect of all these foods.
If you want to know more in detail, Refer: https://healthgroovy.com/foods-to-reduce-stress-and-cortisol-levels/