Table I.

Factors increasing the risk of developing rheumatoid arthritis

Study/Products	Publication year	Number of participants	Meat products	Fish	Coffee	Tea	Alcohol	Salt (sodium)
Sundstroem B, Johansson I, Rantapaa-Dahlqvist S [32]	2015	386	n/a	n/a	n/a	n/a	n/a	0/+1
Hu Y, Costenbader KH, Gao X, et al. [33]	2015	174,638	n/a	n/a	n/a	n/a	–	n/a
Di Giuseppe D, Alfredsson L, Bottai M, et al. [30]	2012	34,141	n/a	n/a	n/a	n/a	–	n/a
Rosell M, Wesley AM, Rydin K, et al. [21]	2009	2,145	n/a	–/02	n/a	n/a	n/a	n/a
Kallberg H, Jacobsen S, Bengtsson C, et al. [22]	2009	1,648	n/a	n/a	n/a	n/a	–	n/a
Benito-Garcia E, Feskanich D, Hu BF, et al. [25]	2007	82,063	0	n/a	n/a	n/a	n/a	n/a
Pattison DJ, Symmons DP, Lunt M, et al. [23]	2004	176	+	n/a	n/a	n/a	n/a	n/a
Karlson EW, Mandl LA, Aweh GN, et al. [29]	2003	83,124	n/a	n/a	–3	–	n/a	n/a
Mikuls TR, Cerhan JR, Criswell LA, et al. [28]	2002	31,336	n/a	n/a	+4	–	n/a	n/a
Grant WB [26]	2000	x5	+	n/a	n/a	n/a	n/a	n/a
Heliovaara M, Aho K, Knekt P, et al. [27]	2000	18,981	n/a	n/a	+	n/a	n/a	n/a

Source: authors’ statement based on literature

n/a – not available; + increasing risk; – decreasing risk; 0 – not influence

¹Together with high consumption among smokers

²Seropositive RA/seronegative RA

³Caffeinated and decaffeinated coffee

⁴Only decaffeinated coffee

⁵Comparison of nutrition patterns in 15 countries