7 healthy foods that you shouldn’t overeat

We all know that overeating junk food isn’t good for our health and our waistline. But did you know that going overboard with certain more nutritious and healthy foods could be just as dangerous? It doesn’t mean you should cut off these products from your diet completely, but consume them in moderation in order to reap their health benefits.

1. Oranges and tomatoes

Oranges and tomatoes are both full of essential vitamins and minerals, but it’s important to remember that they are also highly acidic. The increased acid intake can lead to reflux. Over an extended period of time, this can cause Barrett’s Esophagus, a disorder in which precancerous lesions form on esophageal lining. Stick to no more than 2 servings of oranges or tomatoes a day and avoid these foods if you already have symptoms of reflux.

2. Canned tuna

This delicious, low-calorie fish goes great in a healthy salad or a sandwich. But eating too much of it can result in dangerous mercury levels, since tuna is higher in mercury than many other fish. Excessive mercury intake can lead to vision problems, impaired hearing and speech, lack of coordination, and muscle weakness. Don’t consume more than 3 to 5 cans of tuna a week, and try to choose lower-mercury fish like salmon and pollock.


3. Water

Everybody knows that hydration is essential for good health. But excessive water consumption can cause water intoxication. Yes, there is such thing. This happens when extreme water intake dilutes the sodium in the body, resulting in an abnormally low blood sodium level, which can lead to impaired brain function and even death. But in order to get that water intoxication you should be either a marathon runner or one of those people who force themselves to over-drink. To make sure you’re not consuming too much water, check your urine: if it’s always transparent, reduce your intake.

4. Soy

When consumed in moderation, soy can help control cholesterol levels and blood pressure, but it also inhibits iron absorption, so excessive intake can cause iron-deficiency anemia. Also, because soy contains estrogen-like compounds (isoflavones), long-term consumption of large amounts can cause endometrial hyperplasia, a proliferation of the uterine lining that can lead to uterine cancer. There’s no exact data of how much soy is safe to consume, it’s probably the best to stick to two servings per day or less.

5. Brazil nuts

These nuts are a great source of protein, fiber, essential fatty acids, and selenium. In addition, eating nuts has been shown to lower serum cholesterol and blood pressure. But consuming Brazil nuts every day is not a good idea, since they’re extremely rich in selenium and the nutrient can be toxic in high amounts. Taking in too much may result in hair loss, brittleness or loss of nails, dermatitis, neurological abnormalities, and in severe cases, death. Shelled Brazil nuts maintain higher selenium levels, so don’t eat more than 10 a day.


6. Spinach

This delicious leafy green is an excellent source of protein, fiber, various vitamins and minerals. Spinach is also high in lutein, a carotenoid that may help prevent age-related macular degeneration (a common cause of vision loss and blindness). But it is also high in oxalate, a compound that can lead to the formation of kidney stones, so patients with calcium oxalate kidney stones should consume this leafy green in moderation.

7. Lean animal protein

If your daily dose of protein mainly comes from low-fat meats like chicken breasts or egg whites, you might want to revise your diet. Consuming too many animal proteins can be dangerous since it makes your body produce the hormone insulin-like growth factor 1 (IGF-1), which promotes aging and increases your risk of cancer (particularly breast cancer) when present in high levels. Try to get the majority of your protein from plants, such as beans, nuts, seeds, and whole grains.

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