First - I will apologize for such a long answer - but you did want us to defend our answers. Also, I use the term holistic because the complementary and alternative has such a wide description, yet all three are the same concept.
I had Hepatitis C and the doctors told me when I was first diagnosed that they could not help me. They said that interferon was too strong for me and that it only worked on 5% of the patients, anyway (at the time, 1991).
I used holistic programs starting in 1994 and started feeling better right away. By 1998 my body was clear of it. I became a nutritional counselor because of this.
I had many medical doctors as clients. When I asked them why they didn't use holistic practices with their patients, I was told that it was because they were taught Allopathic medicine, which is different than holistic.
Allopathic Medicine is the treatment of disease through the use of pharmaceuticals and surgery. In the United States, allopathic medicine refers to medical training that leads to a "Doctor of Medicine," which is the degree a medical doctor holds.
Holistic practices are the use of herbs, nutrition and other therapies that are designed to enhance and strengthen the bodies' ability to heal. This is based on facts such as when you break a bone a doctor sets it - but your body heals the bones and surrounding tissue itself. The same holds true for a cold, flu, cut, etc. You might use an antibiotic - but the body does the healing.
Medicine is different than herbs, nutrition and other holistic practices - although a Doctor of Medicine will receive one semester of nutrition. Acupuncture, herbs, homeopathy, nutrition, all require their own extensive training.
Most doctors have to shun holistic practices because medical insurance will only cover "The Standard of Practice," which is the the standard medical practice used at the time in question. Herbs are absolutely not a standard of practice and do not fall into the category of pharmaceuticals, which doctors of medicine are trained to use.
These days, however, you see many medical doctors using nutritional therapies themselves. Two of my dear friends are medical doctors that retired early and went into alternative practices - one became a Doctor of Acupuncture and the other a specialist of chelation therapy.
One of the aforementioned doctors was an onconlogist (cancer doctor). He later went on to work with cancer patients in a holistic manner with much success. Personally - I have met people who healed themselves holistically from Hep C (like myself) and various cancers including breast, stomach and testicular. In all cases they had tumors or cancer surgically removed but then shunned chemo for holistic practices. One link I put below is a Medical Doctor's perspective on cancer, western medicine (allopathic) and holistic practices.
As for my family - we use mainly holistic. My children are 6, 10 and 12. They have never had antibiotics (we will use herbal antibiotics instead) and do not have many health problems other than a common cold or flu, etc. Their doctor still says they are the healthiest children he sees (yes, he knows how we feel about drugs/pharmaceuticals). We all drink fresh vegetable juice on a regular basis and we enjoy a good hamburger sometimes.
However - we do not discount pharmaceuticals because some are necessary. When in pain - homeopathy just doesn't work for us - we tried it. We use painkillers when necessary. If one of us breaks a leg, I'm not running to the massage therapist or herbalist. I will go to a doctor first.
IMHO, doctors and pharmaceuticals for emergencies and such, holistic therapies for healing, long-term protection and prevention.
The book stores and libraries are full of books written by doctors that will give you their perspectives on pharmaceutical and surgical procedures compared to holistic or alternative therapies. You might be surprised to find many in favor of alternative/holistic/complementary.