Table 1.

Number of publications included in the database for this work (Database: PubMed). * %: calculated over the total number of publications compiled from each combination of keywords.

Keywords	Total of Publications	Publications in the Last 5 Years (%)*
l-cysteine & pharmacology	52,873	9976 (19%)
l-cysteine & human health	4742	1725 (36%)
l-cysteine & nutrition	1891	579 (31%)
l-cysteine & nutritional therapy	1074	265 (25%)
l-cysteine & food processing	305	127 (42%)