Try to have o ily fish, e ggs, meat and/or beans, pulses, nuts, seeds, leafy greens and dark purple or red fruits and veg.
Ceisiwch gael pysgod olewog, wyau, cig a/neu ffa, corbys, cnau, hadau, llysiau gwyrdd deiliog a ffrwythau a llysiau porffor tywyll a choch.