Kiwi fruit are actually berries. When organically grown you can eat the skin, it contains a variety of nutrients not found in the flesh.
Kiwi fruit are high in vitamin C, vitamin A (beta carotene) and potassium.
Kiwi fruit contain DNA protecting phytonutrients, the exact constituents that make this happen haven’t been located but the fruit does this.
They would be an effective food to eat as part of a cold/flu treatment.
Zeaxanthin is an antioxidant found inside kiwifruit, it helps protect against free radical oxidization.
Vitamin E is found in moderate levels in kiwi fruit. Deficiencies in vitamin E can show up with various symptoms. Be sure to get plenty.