Buying food has become a stressful experience for me lately.
The more I learn about what is in food and where it comes from, the more selective I am in what I eat. For example, after watching a CBC documentary called Big Sugar (which everyone should watch, by the way), I realized that a ridiculous number of foods contain sugar... and sugarcane workers are basically slaves, some of whom have their passports taken away from them so that they can never go home.
Peanut butter has sugar, as does bread and soy milk. So my sister and I bought some all natural peanut butter and it was really yummy! Unfortunately, it's really hard to find food that doesn't contain a bunch of preservatives, sugars, salts and other unnecessary and somewhat unhealthy additives.
I've also notice that my campus offers extremely little in the choice of healthy foods. I mean, the best you can get is probably Mr. Sub or Extreme Pita, both of which are overpriced (especially the second one). You can find salad at some places but they smother it with dressing (full of salt and sugar), and Treats offers some good creative dishes (though they tend to be dripping with oil... literally).
Recently, some student lobbying got some of the campus coffee shops to sell fair trade coffee, although that is also more expensive and noticeably not promoted. At one place, they even put the fair trade coffee on the back burners so that people won't use it.
It's starting to seem like the main food groups are grease, sugar and salt. Sad times.
EDIT: I just wanted to add one thing I forgot to say. Even the "healthy" drinks, like fruit juice and vitamin water more often than not contain a ton of sugar... and sometimes juice doesn't even have any real fruit in it...