In certain sectors of society, saying "most Americans don't understand ... You're part of a generation which has, by and large, become ... at our own levels of knowledge about mental health disorders and see what's lacking
Um...because someone put to much caffeine XD or a human does not need a lot of caffeine and coffee has more than needed
From the description of the food that the doctor is advising Natalia to start consuming, it is clear that she is suffering from (C) Vitamin D deficiency.
Someone with a vitamin D deficiency would be at risk of rickets, an illness where someone will have skeletal deformities due to soft bones. Increased risk of death due to cardiovascular disease and cancer is also associated with someone who has a vitamin D deficiency.
Prices. The more scarce a resource, the pricier it is. so, you can buy less of that resource. This will have income and substitution effects on your financial management.
