Milk is a nearly complete food. A diet of only raw milk has been used to successfully treat a variety of diseases (1). Some individuals have difficulty digesting lactose but this may be caused by a damaged gut, rather than genes. Avoiding wheat can help the gut heal and restore lactose tolerance (2, 3).

A common criticism of dairy products is that they are made from the milks of other species, which are intended for those species' own young. "Milk is for calves, not adult humans!" While it is true that cows' milk is not designed for adult humans, almost no foods are. Plants grow leaves to absorb sunlight. Their seeds are their own children. Neither are intended to feed us, the predators. The question should be "What is healthy," not "What is designed for us?"

Giving camel milk to type 1 diabetics can significantly reduce their insulin requirements (4).

Fermented milk products appear to be especially beneficial, with some ability to reduce cancer or mortality in rodents (5, 6, 7, 8).

REFERENCES

    1. Crewe, J. R. "Real Milk Cures Many Diseases." (1929).
        • http://handmilking.com/Downloads/Real%20Milk%20Cures%20Many%20Diseases.pdf
    2. Ojetti, Veronica, et al. "Regression of lactose malabsorption in coeliac patients after receiving a gluten-free diet." Scandinavian journal of gastroenterology 43.2 (2008): 174-177.
        • http://www.ncbi.nlm.nih.gov/pubmed/17917999
    3. Bode, S., and E. Gudmand-Hoyer. "Incidence and clinical significance of lactose malabsorption in adult coeliac disease." Scandinavian journal of gastroenterology 23.4 (1988): 484-488.
        • http://www.ncbi.nlm.nih.gov/pubmed/3132738
    4. Agrawal, R. P., et al. "Effect of camel milk on glycemic control and insulin requirement in patients with type 1 diabetes: 2-years randomized controlled trial." European journal of clinical nutrition 65.9 (2011): 1048.
        • https://www.ncbi.nlm.nih.gov/pubmed/21629270
    5. TAKANO, Toshiaki, et al. "Effects of feeding sour milk on longevity and tumorigenesis in mice and rats." Bifidobacteria and Microflora 4.1 (1985): 31-37.
        • https://ci.nii.ac.jp/naid/130003864005/
    6. de LeBlanc, Alejandra de Moreno, and Gabriela Perdigón. "Yogurt feeding inhibits promotion and progression of experimental colorectal cancer." Medical Science Monitor 10.4 (2004): BR96-BR104.
        • https://www.ncbi.nlm.nih.gov/pubmed/15039638
    7. Shackelford, L. A., et al. "Effect of feeding fermented milk on the incidence of chemically induced colon tumors in rats." Nutrition and cancer 5.3-4 (1983): 159.
        • https://www.ncbi.nlm.nih.gov/pubmed/6669478
    8. Hitchins, Anthony D., et al. "Amelioration of the adverse effect of a gastrointestinal challenge with Salmonella enteritidis on weanling rats by a yogurt diet." The American journal of clinical nutrition 41.1 (1985): 92-100.
        • https://www.ncbi.nlm.nih.gov/pubmed/3881008