As a dietitian and mom, I focus on boosting my kids' immune system during cold months. Here's what I buy.

With a variety of uses, I cook with canned tomatoes almost every day, making this Costco 8-pack arguably too small.

Besides their versatility, another reason I love canned tomatoes is that they contain more lycopene than fresh tomatoes. The processing involved in canned tomatoes actually boosts this immune-supporting antioxidant.

Greek yogurt with live and active cultures is a great source of probiotics, which, when consumed regularly, can help support a healthy immune system.

With so many brands to choose from, I personally love the Chobani No Sugar Added Protein Greek yogurt because it is sweetened with stevia and packs 20 grams of protein.

My son loves fruit, but often cannot finish an entire portion. Mandarins are the perfect size for his toddler-sized appetite. The best part? Mandarins are packed with vitamin C, which is an antioxidant that helps your immune cells fight off oxidative stress.

My toddler will eat anything if it is sweet. Enter: honey. I swirl a dollop into his yogurt, spread it on toast, or even use it as a glaze on roasted vegetables. It's an added bonus that honey is packed with phytonutrients with antibacterial and immune-boosting properties.

Keep in mind that children under the age of 1 should not consume any honey, since it can cause a serious illness called botulism.

My favorite way to support my immune health? Stocking up on my favorite healthy soda, OLIPOP. Each can has between 35 and 50 calories, is an excellent source of fiber, and only has two to five grams of sugar. The prebiotics and functional ingredients support digestive health, which plays a key role in overall wellness.

Arguably this season's favorite vegetable, I use pumpkin in a variety of recipes, including chili, muffins, cookies, stuffed peppers, and even yogurt bark. Not only is it seasonal and delicious, but it is also rich in immune-boosting beta carotene, a precursor to vitamin A.

As a busy working mom, I rely heavily on kitchen shortcuts. Pre-minced garlic is one of my favorites because it is always ready in the fridge. If you have time, fresh garlic is slightly better than pre-minced.

In my experience, most dinner recipes call for a quick saute of garlic, which makes the Costco-sized portion a necessity. Beyond being a kitchen staple, garlic also contains a compound called allicin, which is an impressive immune-boosting nutrient.

Pomegranate juice is rich in polyphenols, a type of antioxidant. Research shows that antioxidants can help to maintain the function of immune cells. I enjoy incorporating pomegranate juice into smoothies, as the base of mocktails, or using it to make pomegranate juice popsicles.