Breakfast should energize you for the day ahead. But it's important to pay attention to food combinations that might not be good for you. Here are three to watch out for.

It is a high-sugar combination that could result in fatigue, mood swings, and overeating later in the day.
Instead, use whole-grain bread and add eggs, avocado, or nut butter for healthier proteins and fats.

Tannins in coffee and tea have been found to reduce iron absorption, particularly non-heme iron found in grains, fruits, vegetables, and nuts. Tea reduced iron absorption especially in those who ate less animal sources of iron (which are more readily absorbed in the body) or vitamin C (which helps us absorb plant-based iron).

To avoid this problem, drink coffee or tea at least one hour before your meal. A study, published in Critical Reviews in Food Science and Nutrition in 2000, found that tea reduced iron absorption especially in those who ate insufficient heme sources or vitamin C.

Eggs and bacon offer significant protein but because bacon is a processed red meat, it should be consumed in moderation, only 1-2 times per week. Bacon is high in fat and sodium, hard to digest, especially after fasting, and people have a hard time eating only one piece.

Bacon also lacks nutrients that promote longevity such as micronutrients, fiber, and antioxidants.
Swap your bacon for avocado more often.

With all tasty proteins, moderation is key.
But you'll also want to pay attention to food combinations that might inhibit nutrient absorption or encourage overeating.