One of the biggest keto mistakes is dropping vegetables along with the carbs. Don't. The right vegetables are low in carbs, high in fiber and nutrients, and they help with common problems like constipation.

Eat freely: non-starchy vegetables

These are low in carbs and form the base of most keto plates (Harvard):

  • Leafy greens — spinach, lettuce, kale, arugula, chard
  • Broccoli, cauliflower, cabbage, Brussels sprouts
  • Zucchini, cucumber, bell peppers, asparagus, green beans
  • Mushrooms, celery, avocado

These give you fiber (great for digestion) and vitamins for very few net carbs.

Limit

  • Carrots, beets, onions, tomatoes — a little is fine, but they're higher in sugar than leafy greens, so watch the amount.

Avoid: starchy vegetables

  • Potatoes and sweet potatoes
  • Corn, peas, and beans/legumes
  • Winter squash (butternut, acorn)

These are high in starch and will use up your carb budget quickly.

A simple rule

Vegetables that grow above ground (leaves, stalks, florets) are usually keto-friendly; many that grow below ground (roots, tubers) are starchier. It's a rough guide, not a law — but it helps at the market. See the full keto food list.

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