Samantha Heller, a nutritionist at the New York University Medical Center, is quoted in the Web MD article previously cited as saying that many people may have a sub clinical deficit in omega-3 fatty acids.
For more information about a specific activity, you can speak to a personal trainer, doctor, or even nutritionist to learn more about how many calories you may be burning during your favorite workout activity.
Children with severe food allergies to whole food groups, such as milk or wheat, may require dietary management by a dietitian or nutritionist to ensure they receive the proper nutrients and a well-balanced diet.
According to ABC, "The growing problem of questionable acai sales on the Internet has reached proportions never before seen by the Center for Science in the Public Interest, according to David Schardt, senior nutritionist for the center."
Because of differences in individual diets and individual needs, the decision regarding any child's need for supplements should be made by the parents after discussion with the pediatrician and, where appropriate, a nutritionist.