Folk remedies are still around, and they work - surprisingly. For example, did you know that beets lower blood pressure? Slice a raw beet, then throughly cover with freshly squeezed lemon juice. After the slices have been cooled overnight in the fridge, you can begin eating one slice per day. Dramatic drops in blood pressure result.
Chicken soup really does help with colds. It helps un-stuff your nasal passages and prevents congestion in the lungs according to two well-respected university studies.
Dandruff is cured by using apple cider vinegar, diluted with water in a ratio of 1/2 vinegar, 1/2 water, as a rinse after shampooing. For severe cases, soak your hair in apple cider vinegar for one hour before shampooing.
There's lots more information at the sources listed below.
Sources: health911.com, UAB Health System, tenlinks.com.