Table 1. Summary of the studies investigating paternal obesity and their effect on basic sperm parameters.

	Concentration	Motility	Morphology
Strain et al.146	Decreased	No change	n/a
Jensen et al.58	Decreased	No change	Decreased
Magnusdottir et al.147	Decreased	Decreased	n/a
Fejes et al.148	Decreased	No change	No change
Koloszar et al.149	Decreased	n/a	n/a
Kort et al.45	Decreased *	Decreased *	Decreased *
Qin et al.150	No change	No change	No change
Hammoud et al.151	Decreased	Decreased	Decreased
Pauli et al.56	No change	No change	No change
Aggerholm et al. 52	No change	No change	No change
Nicopoulou et al.152	Decreased	n/a	n/a
Hofny et al.153	Decreased	Decreased	Decreased
Stewart et al.154	Decreased	n/a	n/a
Chavarro et al.155	No change	No change	No change
Shayeb et al. 156	No change	No change	Decreased
Koloszar et al. 149	Decreased	n/a	n/a
Sekhavat et al. 157	Decreased	Decreased	n/a
Paasch et al. 54	Decreased	No change	Decreased
Tunc et al. 49	Decreased	No change	No change
Rybar et al.158	No change	No change	No change
Bakos et al. 20	Decreased	Decreased	No change
Kriegel et al.46	No change	No change	Decreased
Fariello et al. 48	No change	Decreased	No change

^*Significant for Normal Motile Sperm (NMS) = volume*concentration*%motility*%morphology.