"A 100% vegan diet â done intelligently â can work well for many people, but that does not mean it is optimal for everyone. A vegan diet can be unhealthy, e.g., diets based on junk foods or soy meat analogues. Those attempting strict vegan diets are advised to pay attention to their nutrition."
"Essential fatty acids (EFA). It can be difficult to get adequate amounts of EFAs on low-fat vegan diets. There are two primary types of EFA: omega-3 (n-3) and omega-6 (n-6). Vegan diets are usually very low in n-3 (ALA: alpha-linolenic acid) and higher in n-6 (LA: linoleic acid). The Institute of Medicine (2005) suggests adequate intakes (AI) for LA of 17 and 12 grams/day for men and women; for ALA 1.6 and 1.1 grams/day."
"Genetics may be a factor (for some individuals) in the conversion to EPA, DHA. Individuals descended from populations that consumed significant quantities of fish (fresh and/or salt-water) over a long/evolutionary period of time might not produce adequate levels of the enzymes required for conversion (Davis, personal communication; also see Simopolous 1999). This may be relevant to, for example, some people from: Ireland (McQuade & O'Donnell 2007), Britain (Richards et al. 2005, 2006; Bocherens & Drucker 2006), Northern Spain (Adán et al. 2009)."
("This may be relevant to, for example, some people from: Ireland (McQuade & O'Donnell 2007), Britain (Richards et al. 2005, 2006; Bocherens & Drucker 2006), Northern Spain (Adán et al. 2009)."
"A more realistic view is to observe that the range of our natural diet is defined by evolution, which for humans includes tool use and the effects of language and culture, all of which are strong evolutionary selective pressures. The natural human diet is a hybrid between a non-vegetarian hunter-gatherer diet and the plant-based agricultural diets that have dominated since the Neolithic revolution. Where each individual falls in that range will vary according to genetics and other factors."
("Where each individual falls in that range will vary according to genetics and other factors.")
http://www.beyondveg.com/billings-t/fresh/vegan-optimal-1a.shtml
"Essential fatty acids (EFA). It can be difficult to get adequate amounts of EFAs on low-fat vegan diets. There are two primary types of EFA: omega-3 (n-3) and omega-6 (n-6). Vegan diets are usually very low in n-3 (ALA: alpha-linolenic acid) and higher in n-6 (LA: linoleic acid). The Institute of Medicine (2005) suggests adequate intakes (AI) for LA of 17 and 12 grams/day for men and women; for ALA 1.6 and 1.1 grams/day."
"Genetics may be a factor (for some individuals) in the conversion to EPA, DHA. Individuals descended from populations that consumed significant quantities of fish (fresh and/or salt-water) over a long/evolutionary period of time might not produce adequate levels of the enzymes required for conversion (Davis, personal communication; also see Simopolous 1999). This may be relevant to, for example, some people from: Ireland (McQuade & O'Donnell 2007), Britain (Richards et al. 2005, 2006; Bocherens & Drucker 2006), Northern Spain (Adán et al. 2009)."
("This may be relevant to, for example, some people from: Ireland (McQuade & O'Donnell 2007), Britain (Richards et al. 2005, 2006; Bocherens & Drucker 2006), Northern Spain (Adán et al. 2009)."
"A more realistic view is to observe that the range of our natural diet is defined by evolution, which for humans includes tool use and the effects of language and culture, all of which are strong evolutionary selective pressures. The natural human diet is a hybrid between a non-vegetarian hunter-gatherer diet and the plant-based agricultural diets that have dominated since the Neolithic revolution. Where each individual falls in that range will vary according to genetics and other factors."
("Where each individual falls in that range will vary according to genetics and other factors.")
http://www.beyondveg.com/billings-t/fresh/vegan-optimal-1a.shtml
