American consumers seek healthier food products that benefit themselves as well as the environment, reports a market survey by HealthFocus International, a market research and strategic consulting firm specializing in health and nutrition trends.  The company reports that the key areas of interest are brain health, heart health, stress, fatigue, bone and muscle health, skin health.  Surveyed consumers comment that they aim to promote product improvements by demanding more healthful ingredients, reduced fat and sugar content, and refuse to compromise on taste, while purchasing with a deliberate regard for corporate responsibility, including fair trade tactics and emphasis on local sourcing.