Common foods are indeed also medicine. Food cures in TCM are a powerful first step in taking care of ones health. The trick is to know one's foods as well as one's constitution. The key to health is to preserve and restore balance. Here a little about eggplant, taken from "Medical News Today" so you don't have to take my word for it. Click on the link, because there is a whole lot of fascinating info that I did not even know. That they did get right what I did know helps to make them believable. 
Since the season is ending, do yourself a favor, and search for other herbs and foods from such Articles. Science is trying to figure things out for their own reasons, but we get the information now. Carrots, Beets, Greens, Beans etc etc. They ALL have amazing benefits. See what you like and what you need, and find how to incorporate it in your diet. 

Did you know this about eggplant? Read more here

"Findings of animal studies suggest that nasunin, an anthocyanin in eggplant skin, may help protect brain cell membranes from damage caused by free radicals. Nasunin also helps transport nutrients into cells and move waste out.

Anthocyanins also help prevent neuroinflammation and facilitate blood flow to the brain. This could help prevent memory loss and other aspects of age-related mental decline.

Lab experiments have indicated that nasunin may reduce the breakdown of fats in the brain, a process that can cause cell damage."

However, eggplant is in the Nightshade family, keep that in mind. You can eat too much of it, and some people can be allergic to it. 

Some ways to eat them, also from above mentioned article:

Try the following recipes:

• Crispy baked eggplant

• Japanese miso glazed eggplant burgers

• Roasted eggplant with tahini, pine nuts, and lentils

• Spiced shrimp and eggplant stir-fry

• Eggplant spirals with Greek yogurt, tomatoes, and cucumber

• Eggplant stew

More ways to eat eggplant

Find some more ideas below.

Eggplant pizza crust: Replace pizza crust with sliced eggplant and add tomato sauce, cheese, and other toppings for a gluten free, low calorie treat.

Eggplant side dish: Saute or stir-fry chunks of eggplant in olive oil and serve it as a side.

Burger garnish: Cut an eggplant lengthwise into thick slices and grill them. Serve them alone or in a burger.

Oven-baked eggplant fries: Slice an eggplant into strips or wedges and bake them.

Eggplant pasta topping: Cut an eggplant into thick slices, then bread and bake them or saute them and add the strips to a pasta dish. Top the slices with Parmesan cheese to make eggplant Parmesan.

Ratatouille: Saute eggplant, onion, garlic, zucchini, peppers, and tomato in a little olive oil to make ratatouille, a stewed vegetable dish.

Vegetable lasagna: Use the ratatouille above to replace the meat layer in lasagna.

Baba ghanoush: This is a popular Middle Eastern dip of grilled eggplant, tahini, lemon juice, garlic, and spices. Some people add yogurt.

Maghluba: This is an “upside down” rice dish with chicken and eggplant.