Older adults need to be more serious about their immunity because their organs are becoming weaker due to wear and tear. It is customary that older adults choose their foods more wisely so that they get the required amount of energy minus the cholesterol and other things that may damage their system. Here is a list of the best immunity boosting foods for older adults. These foods will prevent the elderly people from frequently falling sick and lead an independent life. These foods are good for heart as well as the brain as they boost blood circulation to these vital organs.