Table 3.

Summary of Indian studies documenting Vitamin B12 status

Study	Setting and population	Vitamin B12 levels (median) (pg/ml)	Prevalence of deficiency (%)
Refsum et al, 2001, AJCN[11]	63 subjects from urban area	216.86	46
Shobha et al, 2011, IJMR[12]	175 elderly urban subjects from south India	414.74	16
Naik et al, 2018, BJN[13]	46 males and 73 females from urban area	Males: 198.56 Females: 222.28	Males: 77 Females: 50
Yajnik et al, 2006, JAPI[14]	441 males from rural, slums and urban areas	149.09	67