walnuts - how much to consume
You have to eat it in moderation because even thought it is a good fat, it is fat. And too much good fat is just like eating bad fat, plus it contributes to weight gain and does not produce any health benefits. He needs 1 serving a day. A serving of walnuts is 2 whole walnuts (that is 4 halves). Your dad eating the whole bag does him more harm than good. I know, 2 walnuts is not much. One way I suggest is to crush them and eat them in salad or soup.