“…The will to highlight the lactose tolerance threshold for intolerance population is not emerging: numerous scientific studies have been carried out for over 40 years (Stephenson and Latham, 1974;Paige et al, 1975;Jones et al, 1976;Lisker and Aguilar, 1978;Newcomer et al, 1978;Cheng et al, 1979;Rorick and Scrimshaw, 1979;Haverberg et al, 1980;Kwon et al, 1980;Rask Pedersen et al, 1982;Lybeck Sørensen et al, 1983;Cavalli-Sforza and Strata, 1987;Johnson et al, 1993b;Suarez et al, 1995aSuarez et al, , 1997Vesa et al, 1996aVesa et al, , 1997Xenos et al, 1998;Montalto et al, 2005). Yet, the first metaanalyses showing this threshold value are recent.…”