In order to lose weight, would you say that eating less calories (1200) is better,

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or a moderate amount? I have recently started eating more. I'm used to consuming around 1200 calories a day, but recently I've been eating around 1500. Do you think it will be harder for me to lose weight eating this amount, even though I am keeping the same exercise routine? (run four miles, small weights and bodyweight exercises, usually totals around 500 calories)