This invention relates to the use of the combination of 25-hydroxyvitamin D3 (“25-OH D3”) and antioxidants/anti-inflammatories (ascorbic acid vitamin E and canthaxanthin) to make a premix or feed which can ameliorate various problems observed in companion animals which have been subject to overfeeding. Foods containing the 25-OH D3 and antioxidants/anti-inflammatories and premixes are also provided.