Chemo is usually administered in a sterile medical environment where there is little concern for anything other than a swift and efficient infusion of the chemo. Little concern is shown for the many other things a patient of chemo can experience. An holistic approach to the treatment of cancer might include chemo, but would also be concerned and provide support for emotional and spiritual needs of the patient - making it easier to face the responsibility of having to make hard choices. In other words holistic isn't a product or a tangible substance that you can actually take, it's a philosophy. You can't really think of an herb or a specific treatment as holistic in and of itself.
Many people regularly work out at a gym or take an aerobics or yoga class every week.
Some just go out dancin' every weekend. Many PWAs find that some form of individual mental health counseling or therapy coupled with at least one good support group on a weekly basis is an important component of an holistic approach. Often PWAs find themselves on a spiritual quest which involves reading about or studying different religious philosophies. Some find spiritual peace in meditation, while others are helped by a new found religious verve. This addresses the needs of the whole person, body, mind and spirit, a real holistic approach.