I take a daily supplement of Omega-3 fish oil. I recently saw an advertisement for "mercury free" fish oil. Mine does not say mercury free. Are most supplements mercury free or is this something I should search for?
I have been trying different diets (low-carb, high-protein, high-fiber, etc.), but nothing works for me! Currently, I'm walking and jogging on a treadmill five days a week and eat moderately (about 1,300 to 1,400 calories daily), but I still can't lose weight! Why is this happening, and what can I do?