This list of healthy foods includes some harsh truths that may shock you. The everyday healthy diet is supposed to give you energy, maintain a healthy BMI, and make you happy. But people rarely, if ever, talk about some of the negative health effects "healthy" foods can cause. Don't get freaked out - most of the bad stuff on this list only happens if you eat too much of it. Still, it's worth combing through. Knowledge is power, after all (at least as much power as your next spinach-kale-banana smoothie will give you).
- Photo: Daniella Segura / Flickr
Spinach is great for smoothies, salads - even pizza. It's healthy, for sure, but spinach is also high in oxalate, a compound that can cause kidney stones. So if you are prone to calcium kidney stones, consider cutting back - think twice about your next green smoothie with spinach binge.
- Photo: Metaweb / GNU Free Documentation LicenseSushi's great, but tuna can cause major health problems if you eat too much. Too much tuna can cause mercury poisoning, which symptoms include tingling sensations and a loss of balance.
- Photo: Fil.Al / FlickrNew studies have shown coffee has many health benefits - but it's not without its problems, either. Coffee can increase your heart rate and blood pressure, and cause insomnia and dehydration. Keep it to a couple cups a day, though, and you should be fine.
- Photo: Kurtis Garbutt / FlickrRaw tomatoes have been known to keep cancer away, although eating too many can actually interfere with your immune system. Eat them, but not too many.