Grapefruit
葡萄柚
Grapefruits have a good amount of vitamin C. But science has yet to prove that you can easily get enough vitamin C through foods alone, without supplementation, to help treat cold and flu. However, grapefruit is packed with flavonoids -- natural chemical compounds that have been found to increase immune system activation. Dislike grapefruits? Try oranges or tangerines.

葡萄柚含有大量的维C，但是科研人员还无法证实在感冒时，人体仅靠食物就能获得足量的维C来对抗感冒。但是，葡萄柚富含一种天然的具有增强免疫力的化合物，类黄酮。如果不喜欢葡萄柚，可以试试桔子或橘子。

Wheat Germ
麦芽

Wheat germ is the part of a wheat seed that feeds a baby wheat plant, so it is full of nutrients. It has zinc, antioxidants, and B vitamins among other vital vitamins and minerals. Wheat germ also offers a good mix of fiber, protein, and some good fat. Substitute wheat germ for part of the regular flour called for in baked goods and other recipes.

麦芽作为小麦的种子，用来给小麦提供养分。麦芽富含大量的营养成分，包括锌，抗氧化剂以及B族维生素。同时麦芽也富含大量的纤维、蛋白和优质脂肪。用麦芽代替常用的面粉烹饪烘烤的食物吧。

Low-Fat Yogurt
低脂酸奶

A daily cup may reduce your chances of getting a cold. Look for labels listing "live and active cultures." Some researchers believe they may stimulate your immune system to fight disease. Also look for vitamin D. Recent studies have found a link between low vitamin D levels and an increased risk of cold and flu.

每天一杯酸奶能减低感冒的几率。记得看标签上是否标有”live and active cultures"，这意味着酸奶中的益生菌处于良好的状态。一些科研人员认为酸奶可能刺激免疫系统从而对抗疾病。酸奶还富含维生素D，最近的研究显示维生素D缺乏会患感冒和流感的高风险。

Garlic
大蒜

Garlic offers several antioxidants that battle immune system invaders. Among garlic's targets are H. pylori, the bacteria associated with some ulcers and stomach cancer. Cooking tip: Peel, chop and let sit 15 to 20 minutes before cooking to activate immune-boosting enzymes.

大蒜含有几种抗氧化成分可以增强免疫力。大蒜可以对抗幽门螺杆菌，这种细菌与消化道的溃疡和胃癌有密切关系。烹饪小贴士：将蒜削皮，剁碎，放置15-20分钟后再烹饪，这样可以激活哪些增强免疫力的酶。

Spinach
菠菜

Known as a "super food," spinach is nutrient-rich. It has folate, which helps your body produce new cells and repair DNA. And it boasts fiber, antioxidants, such as vitamin C, and more. Eat spinach raw or lightly cooked to get the most benefit.

作为“超级食物“，菠菜富含大量营养成分。首先，叶酸，帮助机体细胞新陈代谢，修复DNA。其次，纤维与抗氧化剂，例如维生素C。生吃菠菜或者稍微烹饪一下能够避免营养成分的丢失。

Tea
茶

Green or black? Both are loaded with disease-fighting polyphenols and flavonoids. These antioxidants seek out cell-damaging free radicals and destroy them. Caffeinated and decaf work equally well.

不管是绿茶还是红茶，都富含茶多酚和类黄酮，两者皆可对抗疾病。这两者抗氧化剂能够寻找到损失细胞的自由基并且将其破坏掉。无论是含咖啡因或者不含咖啡因，都同样有效。

Sweet Potato
红薯

Like carrots, sweet potatoes have the antioxidant beta-carotene, which mops up damaging free radicals. Sweet potatoes also boast vitamin A, which is linked to slowing the aging process and may reduce the risk of some cancers.

红薯与萝卜一样，含有大量的抗氧化剂，贝塔胡萝卜素。这种抗氧化剂成分能破话自由基。除此之外，红薯含有大量的维生素A，能够延缓衰老以及减少患癌症的几率。

Broccoli
西兰花

Easy to find at the grocery store and incorporate into meals, broccoli is an immune-boosting basic. One study reported a chemical in broccoli helped stimulate the immune systems of mice. Plus, it's full of nutrients that protect your body from damage. It has vitamins A, vitamin C, and glutathione. Add some low-fat cheese to round out a side dish with immune-enhancing B vitamins and vitamin D

在杂货店很容易买到并且方便与其他食物搭配，西兰花可以说是最基本的免疫力增强食物。有研究证实西兰花中的一种化学物质能够帮助刺激小鼠的免疫系统。此外，含有大量的营养物质可以保护机体免于伤害。包括维生素A，维生素C和谷胱甘肽。烹饪的时候加点低脂奶酪，还能补充维生素B和维生素D。译文15种增强免疫力的食物