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Fiber – The Unexpected Ally in Breast Cancer Recovery

A recent article in the Washington Post Health & Science section explored the wonders of dietary fibre in an article called ‘Fiber has surprising anti-aging benefits, but most people don’t eat enough of it’ The article discussed how ‘…Fiber gets well-deserved credit for keeping the digestive system in good working order — but it does plenty more. In fact, it’s a major player in so many of your body’s systems that getting enough can actually help keep you youthful. Older people who ate fiber-rich diets were 80 percent more likely to live longer and stay healthier than those who didn’t, according to a recent study in the Journals of Gerontology’

But what is fiber and why does it matter?vegetables

Before we jump in there, let me answer the perennial questions that arise when we, as pelvic rehab clinicians, talk about fiber…’Is it in our scope of practice to talk about food?!’ I think it is fundamental that if we are placing ourselves as experts in bladder and bowel dysfunction, that we also remember that we can’t focus on problems at one end of ‘the tube’ without thinking about what happens at the other end. Furthermore, let me quote the APTA RC 12-15: The Role of the Physical Therapist in Diet and Nutrition. (June 2015): “as diet and nutrition are key components of primary, secondary, and tertiary prevention of many conditions managed by physical therapists, it is the role of the physical therapist to evaluate for and provide information on diet and nutritional issues to patient, clients, and the community within the scope of physical therapist practice. This includes appropriate referrals to nutrition and dietary medical professionals when the required advice and education lie outside the education level of the physical therapist’’

Fiber plays a huge role in so many of the health issues that we as clinicians face daily – constipation is regarded as a scourge of a modern sedentary society, perhaps over-reliant on processed convenience food – this is borne out when we gaze upon the rows of constipation remedies and laxatives in our pharmacies and supermarkets.

Let's take a look at the effects of fiber on breast cancer recovery – what does the research say?

There is growing interest and evidence to suggest that making different food choices can help control symptoms of breast cancer treatment and improve recovery markers – avoiding food with added sugar, hydrating well and focusing primarily on plant based food. Fiber is of course beneficial for bowel health, but may also have added benefits for heart health, managing insulin resistance, preventing excess weight gain and actually helping the body to excrete excess estrogen, which is often a driver for hormonally sensitive cancers. Fiber may be Insoluble (whole grains, vegetables) or Soluble (oats, rice, beans, fruit) but both are essential and variety is best.

In their paper ‘Diets and Hormonal levels in Post menopausal women with or without Breast Cancer’ Aubertin – Leheudre et al (2011) stated that ‘…Women eating a vegetarian diet may have lower breast cancer because of improved elimination of excess estrogen’, but even prior to that, in ‘Estrogen excretion patterns and plasma levels in vegetarian and omnivorous women.’ Golden et al (1982) concluded that ‘…that vegetarian women have an increased fecal output, which leads to increased fecal excretion of estrogen and a decreased plasma concentration of estrogen.’

Fiber may also be beneficial in the management of colorectal cancer, which is on the rise in younger women and men. A recent report by the World Cancer Research Fund International/American Institute for Cancer Research found that eating 90 grams of fiber-rich whole grains daily could lower colorectal cancer risk by 17 percent…and the side effects? A happier healthy digestive system, improved cardiovascular health and a lower risk of Type 2 Diabetes.

Your mother was right – eat your vegetables!

For more information on colorectal function and dysfunction, take Pelvic Floor Level 2A or for a deeper dive on the role of nutrition and pelvic health, why not take Megan Pribyl’s excellent course, Nutrition Perspectives for the Pelvic Rehab Therapist? Physical Therapy Treatment for the Breast Oncology Patient is also an excellent opportunity to learn about chemotherapy, radiation and pharmaceutical side effects of breast cancer treatment, as well as expected outcomes in order for the therapist to determine appropriate therapeutic parameters.


https://www.washingtonpost.com/national/health-science/fiber-has-surprising-anti-aging-benefits-but-most-people-dont-eat-enough-of-it/2018/04/27/c5ffd8c0-4706-11e8-827e-190efaf1f1ee_story.html?fbclid=IwAR0b-9VFUOCyUOgwe2BqV7-ahqwGzWs9rNpd1mscT75KNOGqnHm4ooFAu74&utm_term=.4d2784974ddc
Estrogen excretion patterns and plasma levels in vegetarian and omnivorous women. Goldin BR, Adlercreutz H, Gorbach SL, Warram JH, Dwyer JT, Swenson L, Woods MN. N Engl J Med. 1982 Dec 16;307(25):1542-7.
Diets and hormonal levels in postmenopausal women with or without breast cancer. Aubertin-Leheudre M1, Hämäläinen E, Adlercreutz H. Nutr Cancer. 2011;63(4):514-24. doi: 10.1080/01635581.2011.538487.

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