Unhealthy stools may appear excessively hard or lumpy, signifying constipation (types 1 and 2), or be overly loose and watery, indicating diarrhea (type 7)
Glutathione metabolism is impaired when not protected, and systemic effect remains low
PMID: 74 Galle-TregerLSuzukiYPatelNSankaranarayananIAronJLMaaziHet al
Animal studies have pointed out that riboflavin inadequacy can increase the risk of cancer, although the epidemiological data, including meta-analyses, on the association with human colorectal cancer and breast cancer are inconsistent [31]
A review of forty-nine observational studies published in the May 2011 issue of the Cochrane Database of Systematic Reviews concluded that higher selenium exposure reduces overall cancer incidence by about 34 percent in men and 10 percent in women, but notes these studies had several limitations, including data quality, bias, and large differences among different studies