Science Daily  December 19, 2019 Researchers in Canada examined two decades of data from studies that examine the relationships between common gene mutations and different diseases and conditions. According to their analysis the vast majority of diseases, including many cancers, diabetes, and Alzheimer’s disease, have a genetic contribution of 5 to 10 per cent at best, some notable exceptions, include Crohn’s disease, celiac disease, and macular degeneration, which have a genetic contribution of approximately 40 to 50 per cent. Despite these rare exceptions, it is becoming increasingly clear that the risks for getting most diseases arise from an individual’s metabolism, […]