Q: Should I worry about eating a lot of fish? I hear that they contain a lot of toxins like mercury,etc...Would you know what is the safest fish to eat and which one should I avoid?

A: Toxins in fish are a tough subject because there's a lot of conflicting or incomplete data on it. Some things are pretty well established however. For example, salmon's mercury levels are known to be much lower than average fish's. Tuna, on the other hand, has relatively high concentrations of mercury and albacore tuna the highest of all. So if you're concerned about mercury specifically, you can avoid tuna and maybe have more salmon (which has the very beneficial for health omega-3 fats).

In general however, yes, it's worriesome about what you put in your body as your food. Everything from mercury to pesticides to growth hormones will probably make it into your system unless you eat exclusively 100% organic foods (which takes a toll on your budget). Each person has a choice to make for her- or himself as to how much to learn and how much to worry about various toxins in the foods they eat.