It’s important for seniors to eat well in the winter months, and some key foods to eat for optimum health include: 1) Citrus fruits – citrus fruits are high in vitamin C, helping to boost immunity. 2) Dark, leafy vegetables – broccoli, spinach, and chard provide many vitamins and antioxidants. 3) Root veggies – root vegetables are high in vitamins, minerals, and fibre. 4) Vitamin D – with less sunlight exposure during the winter, eat egg yolks, healthy grains, seafood, and fortified milk. 5) Good fats – flax seed, walnuts, and avocados are high in healthy omega 3 fatty acids.