“…The basis of NT is that each individual has unique nutritional requirements (Koithan and Devika, 2010) determined by a number of factors; including genetics (Ziegler et al, 2002), lifestyle, environmental exposures and life events; and that nutritional intake and other health choices (such as physical activity) can impact on the expression of the individual's inherited constitution (Mathers, 2008, Supic et al, 2013. The approach of NT practitioners to this interaction of genetics and potentially modifiable risks is therefore to assess the client and counsel on appropriate levels and sources of nutrients, providing a personalised nutritional plan (Complementary & Natural Healthcare Council, 2017, Skills for Health, 2010c, Granger and Watkins, 2014. Genetic information may also be considered in a personalised nutrition plan by some NT practitioners (Richardson andMason, 2011, Benbow et al, 2017) and may incorporate analysis of specific genes associated with nutritional function, such as those governing fat metabolism (Hesketh, 2013) or folate metabolism (Ragasudha et al, 2012, Huang et al, 2012, Wernimont et al, 2012, Powers, 2005.…”