When constipated, it is best to avoid foods that are low in fiber, highly processed, and dehydrating. Key foods to avoid include:

• Highly processed foods such as packaged snacks, frozen meals, processed meats, and bakery products like muffins and cakes, which are low in fiber and high in unhealthy fats and sodium.
• Refined grains like white bread, white rice, and products made with white flour that lack the fiber found in whole grains.
• Sugar-sweetened foods and drinks including sodas, candies, and desserts that can negatively affect gut health.
• Dairy products in excess, especially those low in fiber and high in fat, as they can sometimes worsen constipation; low-fat dairy is preferable.
• Fried and greasy foods that slow digestion.
• Red meats, which are high in protein and fat but low in fiber.
• High-salt foods that may worsen dehydration.
• Some people may also find that bananas (especially ripe), eggs, garlic, onions, and legumes worsen symptoms, particularly if they have IBS or FODMAP sensitivities.

In contrast, increasing intake of fiber-rich foods (whole grains, fruits with skins, vegetables, legumes) and fluids helps ease constipation.