There's not a day that goes by where someone doesn't come to me asking for diet advice confused as to why they're NOT losing weight even though they don't eat "a lot"...and even if they're eating "healthy". The truth is that while "quanity" does matter, it's possible to still overconsume calories if choosing the wrong foods.
foods, even though they're considered very healthy, carry loads of
calories in a very small amount of food. We call these calorically dense
foods and if your diet is comprised of a bunch of them, you can easily
gain weight even without eating "a lot" of food.
Here are some "healthy" examples of calorically dense foods:
1. Granola - granola, especially the varieties mixed with nuts can pack as many as 500 cals per cup!
2. Pasta - a moderate 1 and 1/2 cups of most pastas yield more than 60 grams of carbs and almost 350 calories
3. Avocado - avocado is awesome and a great source of monounsaturated fat, but one single avocado is over 300 calories and 30 grams of fat
4. Nuts and Nut Butters - nuts are super healthy, but one of the most calorically dense foods around. A few ounces could mean 400+ calories
5. Fruit Juice and Smoothies - all fruit juices are loaded with sugar and so are most "smoothie" shop smoothies (make your own with whole fruit)
6. Dried Fruit
- dried fruits remove the water content which dramatically decreases
volume...what's left is high in sugar and very calorically dense
7. "Whole Wheat" Breads - even the 100% whole wheat variety can pack a mean calorie punch if you're eating a lot of grains as part of your diet
8. Whole Grain Bagels - a large "deli" bagel is loaded with carbs and calories, many times over 400 cals in a single bagel
some of the foods above are only "thought" to be healthy (fruit juice,
whole grain bagels, etc), stuff like nuts, nut butters, and avocado are
foods that I'd recommend in just about everyone's diet and they are indeed great choices.
said, these calorically dense foods require that you monitor your
intake of them closely. A few ounces of nuts, a couple tablespoons of
nut butter, and an avocado is NOT a lot of food, but if you ate all of
these every day, you'd be getting close to 1000 calories just right