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by reese_john 3173 days ago
Being on a caloric deficit is a sufficient condition for weight loss[0]. The composition of your diet will determine what ratio of it is actually fat/lean body mass, ie diets higher in protein will usually yield higher fat loss and keep more LBM. Exercise/resistance training is also a factor.

[0] https://www.ncbi.nlm.nih.gov/pubmed/1734671