In the old days, when doctors were few and far between in rural areas, women with knowledge of medicinal herbs, of healing the sick and of midwifery were important community members.
In the American Southwest, among the old Hispanic families, there are many documented curanderas (healers). The older generations still tend gardens of special medicinal herbs and are the keepers, preservers and transmitters of generations of remedies.
In some countries, foods are classified as hot or cold in nature. People with certain ailments are told to eat one and not the other or vice versa. It is something a person is brought up with and never disregarded. Those who have not been raised with this system generally find "the rules" somewhat strange.
So do these remedies really work, or do we just believe that they work because that’s what we’ve been told since we were little children? In any case, this is part of our family history, of our heritage, and the details should be preserved.