Selenium, plentiful in shellfish such as oysters, lobsters, crabs, and clams, helps white blood cells produce cytokines—proteins that help clear flu viruses out of the body. Salmon, mackerel, and herring are rich in omega-3 fats, which reduce inflammation, increasing airflow and protecting lungs from colds and respiratory infections.

Your optimal dose: Two servings a week (unless you're pregnant or planning to be), and with the Fish Oil that contains DHA and EPA, two essential fatty acids that help support and maintain the cardiovascular system. In scientific research, Fish Oil is shown to maintain cholesterol levels already within the normal range and to support blood pressure also within the normal range. In addition to benefitting heart health, the omega-3 fatty acid DHA benefits the brain. The brain is rich in omega-3 fatty acids, especially the omega-3 essential fatty acid DHA. Obtaining sufficient omega-3 is crucial for brain health, especially, cognitive function and mood. For women, fatty acids in Fish Oil are also shown to reduce the discomforts of PMS and menopause.