What are some examples of problematic substance use and related behaviours?

1. b vitamins2. vitamin k3. vitamin d4. examples are walnuts, seeds, tofu5.  total fat, saturated fat, trans fat, cholesterol, sodium, total carbohydrate, dietary fiber, sugars, protein, vitamin a, vitamin c, calcium, and iron.6. 11257. they have to contain reliable information8. less than 10%  9. i didnt read the course so im not surehope that : p

What are the items? ?

As a teen your period can fluctuate but if it seems to unusual to you it’s best just to ask your doctor, it’s probably not something serious