A good deal of healthy-eating advice comes down to a simple premise: Moderation in all things.
Thats true even for healthy foods, such as cruciferous veggies, fish, and avocados.
Here are nine healthy foods you shouldnt overeat and why.
Even nutritious foods may be harmful in large quantities.
The 20202025 Dietary Guidelines for Americans from theU.S.
Departments of Agriculture (USDA) and Health and Human Servicesrecommend making half your plate fruits and vegetables.
Plus, cruciferous vegetables can interfere with how your thyroid uses iodine, Klamer says.
But note that cooking the cruciferous veggies lessens the effect on the thyroid.
At least run it past your healthcare team first, she says.
Foods High in Healthy Fats
Avocados, nuts, andolive oilfall into this category.
Foods withhealthy fatsare good for you when eaten in moderation, but theyre packed with calories that quickly accumulate.
That can lead to high blood pressure and increase the risk ofheart disease, she says.
Lemon Water
Lemon water is a low-calorie, low-sugar way to make drinking water more fun.
I actually have personal experience with this, she says.
When sipping lemon water and other acidic drinks, use a straw and rinse your mouth afterward.
That can help mitigate any side effects.
Instant Oatmeal
Oats contain beneficial fiber, magnesium, and zinc, according to theHarvard T.H.
Chan School of Public Health.
Yet many brands of instant oatmeal go heavy on sugar, McBryan says.
For example, a packet ofQuaker Instant Oatmeal Maple and Brown Sugarcontains 12 g of added sugars.
In the morning, top it with fruit or a tablespoon of peanut butter, she says.
Food and Drug Administration (FDA).
But if you eat too much of certain kinds, you may increase your risk of mercury poisoning.
Thats because they contain the least amount of mercury.
Its okay to have all these types of fish two to three times a week in a 4-oz serving.
To combat this, slowly increase the amount of fiber you consume, and drink lots of water.
The condition is unlikely to lead to any serious consequences, according to the case study.
As Klamer says, all these foods can be part of a healthy, balanced diet.
Im not saying that no one should eat these foods, she says.
You just want to avoid overdoing it on one.
She earned her master’s in exercise and nutrition science at Lipscomb University.
Angela Haupt is a freelance writer and editor based in Pennsylvania.
She was previously the managing editor of health atU.S.
News & World Report, where she helped launch and continued to lead the popular Best Diets rankings.
Angela’s work has appeared in publications such asWashington Post,Women’s Healthmagazine,USA Today, andNewsday.
She received a bachelor’s degree in journalism from Penn State University.
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