In a small mixing bowl, combine ground turmeric, ground cinnamon, and crushed walnuts if using. Stir well. Slowly add raw, unfiltered honey to the dry ingredients and stir until fully incorporated. Add fresh lemon juice and mix until the mixture is smooth and blended. Transfer the mixture to a clean glass jar with a tight-fitting lid and refrigerate for 12 to 24 hours. Each morning, take 1 teaspoon on an empty stomach, either straight or stirred into warm water or herbal tea.