I used to see people reading labels in grocery stores and I would wonder what they were using that information for. I was perfectly happy continuing to live in happy ignorance of what I was putting in my body. I did not take my health seriously at all. When I started doing keto I had to train myself to READ EVERYTHING. No more blindly trusting that if a product had a heart health symbol on it, or it said "diabetic friendly" (the biggest lie you can find on packaging in South Africa), "sugar free" (when the contents list maltodextrin), "wholegrain", "all-natural", "organic", "gluten free", "low calorie", oh and my favourite "superfood". I quickly figured out that the only person I could trust regarding my nutrition, was myself. Which meant I had to educate myself.
In the first few months I did a lot of reading and watched all the food related documentaries I could get my hands on, regardless of their point of view. I wanted all the information. Then I started filtering the information based on what I felt was working for my body. As I'm sure you've all figured out by now, I do keto, which means I severely limit my carbohydrate intake to less than 25g a day. I had to teach myself how to make sense of what food labels said so that I knew what I was eating each day.