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“In fall, squash abounds,” Miller says. “Think acorn, butternut, spaghetti, and kabocha squash. All are packed with health-promoting nutrients, like vitamin A, and fiber.” For a lower calorie alternative to pasta, try spaghetti squash. One cup has 40 calories, whereas one cup of pasta has about 220 calories, she adds. Squash is a good source of antioxidants needed for a healthy immune system.