It is very important to maintain your immune systems, this helps with fighting fatal diseases like cancers and promotes longevity. To boost immunity you need to make sure you are eating the right foods. Here are the three immunity boosting foods.
Tahini: One of the fabulous immunity boosting foods is Tahini! It is made from sesame seeds paste and is like a peanut butter and you can use it like one too. It’s a super food that you can use as a spread or as a dip. Here’s a recipe for a Tahini Veggie Dip:
To make a Tahini Veggie Dip: 1 cup of Greek yogurt, 1 clove garlic minced, 1 tablespoon of Tahini and juice of one lemon. Mix them all up and use as a dip. It is loaded with lots of magnesium, protein and zinc and is very tasty and medicinal.
Black pepper and Oregano: Black pepper is a common spice used in many foods. It has a chemical known as pepperine that helps absorbing properties of other spices and makes them available for the body. This makes black pepper as essential ingredient for body making joints and bones healthy. It also added more flavors to the food.
Oregano, a leafy version, when you crunch it, releases aromatic oils that fight germs making it a powerful anti flammatory tool. Look for the little tiny leaf in bottle while shopping, avoid grounded oregano.
Pumpkin: It is another immunity boosting food that can be used in many ways. A pumpkin soup is enough to boost immunity and has long been used for medicinal purposes.
To make Pumpkin Soup: Roast 4 lb pumpkin for 45 min at 400 degrees Fahrenheit, scoop out seeds and blend the pumpkin, squash with garlic, chicken stock and onion together. This soup is filled with vitamins and is a perfect bowl of anti-oxidant and anti-flammatory agents. 
Another great recipe by Dr. Oz is the pumpkin puree. Have a can of 100% pumpkin puree, with a teaspoon of cholesterol lowering spread and a dash of stevia and cinnamon, heat in microwave. Mix all ingredients in a microwave-safe bowl. Heat the mixture in the microwave for about a minute. Let cool and serve.
All the above mentioned foods have proven to boost immunity and people have prevented themselves from all kinds of diseases by adding these to their daily diet.
Reference: Three Foods to Boost Immunity