Table 2.

The effect of polyphenols on oxidative stress in depression—review of studies in human.

Polyphenols	Oxidative Stress Parameters	Inflammation Parameters	Place of Collection	References
Curcumin	No significant effects on blood chemistry		Blood	[147]
Poliphenols	↓ DTAC; ↓ Vitamin C; ↓ Vitamin A; ↓ Vitamin E		DTAC was calculated	[130]
Curcumin		↓IL-1β, ↓TNF-α; ↓BDNF	Serum	[148]
Curcumin	↑ MDA; ↑ TAC		Serum	[149]

↑—Increased concentration or activity in comparison to the control (healthy) group; ↓—decreased or inhibited concentration or activity in comparison to the control (healthy) group; BDNF—Brain-derived neurotrophic factor; DTAC—dietary total antioxidant capacity; IL-1β—interleukin 1β; MDA—malondialdehyde; TAC—total antioxidant capacity; TNF-α—tumor necrosis factor.