Most if not all complementary therapies are safe and non-invasive. They tend also to be fairly inexpensive, and very pleasant, comforting, useful. Your book provides information on over 50 alternative therapies. There are many variations of massage, from deep tissue, hard pressure massage, to very light, barely-touching the skin massage. Massage techniques have demonstrable physiologic and emotional benefits.
Music therapy is great.
The mint-family herbs and ginger tea do wonders for indigestion. They tend to be invasive, expensive, unpleasant, and, worst of all, they are not known to work- they are not effective cures for disease. Let's assume that we're all in pretty good shape, but as is true of everyone we have some aches and pains, some levels of psychological distress. So what we want to do is try some of the complementary therapies that work well for the specific problem we experience. However, it should NOT be used with any prescription medications for depression or anxiety.