Healthy Eating Archive

Some fermented foods contain probiotics, beneficial microorganisms that can live in your intestines. These microorganisms help you stay healthy, potentially improving your immune function and reducing damaging inflammation. Eating prebiotics—high-fiber foods that are a source of nutrition for these healthful microorganisms—is essential to help these beneficial microorganisms grow and thrive.

Studies show that people who regularly adhere to the Mediterranean diet lower their risk of cardiovascular disease, many types of cancer, and cognitive decline with age. But it’s possible that this healthy diet can be made even healthier. New research suggests that making the diet "greener" by boosting amounts of dark green vegetables, green tea, and plant proteins high in the micronutrients known as polyphenols offers even greater benefits.

People should be cautious about weight-loss diets that restrict a specific category of food (such as carbohydrates, fats, or even animal products) without focusing on the overall quality of the foods. Diets with lots of ultra-processed foods or red meat may contribute to poor heart health. But people can lose weight on less-extreme versions of either low-carb or low-fat diets, as long as they focus mostly on unprocessed or minimally processed foods.

Fatty liver disease is a condition caused by irritation to the liver, and one specific type is triggered by metabolic risk factors. Following a healthy diet can prevent or possibly even reverse it.

A 2023 study found that the DASH diet, rich in whole grains, lean protein, nuts, low-fat dairy, and fruits and vegetables, may dramatically lower the risk of heart problems in women and Black adults.

About 96 million Americans have prediabetes, defined by elevated blood sugar levels that are not high enough to qualify as diabetes. Risk factors include overweight or obesity, family history, and inactivity. People with prediabetes may have more infections and frequent urination or blurry vision after big meals. Lifestyle changes such as maintaining a healthy weight, exercising, eating healthy foods, drinking alcohol moderately, and not smoking may prevent prediabetes from progressing to diabetes.

People who follow a combination of healthy diet plans that share similar traits may have a lower risk of death from cardiovascular disease and cancer.

A 2022 study of 11,000 dementia-free people found that middle-aged participants who ate the most junk food had a faster rate (up to 28%) of cognitive decline, compared with those who ate the least junk food.

In addition to raising blood pressure, too much salt in the diet can have other detrimental effects on the heart, including damaging the inner layer of blood vessels and altering the body's hormonal and inflammatory response. Following the DASH diet, choosing lower-sodium versions of commonly eaten foods, and skipping the saltshaker can help people eat less salt. To boost flavor without salt, options include salt-free herb and spice blends, lemon or lime zest or juice, and flavored vinegars.

There’s no evidence that maintaining a healthy lifestyle will suddenly boost the immune system. However, it’s clear that healthy lifestyle habits contribute to overall health, supporting the body’s ability to fight infections instead of creating new problems. Healthy habits that help maintain a robust immune system include getting seven to nine hours of sleep per night, exercising, reducing stress, eating a healthy diet, not smoking, drinking alcohol only in moderation, maintaining a healthy weight, and getting underlying conditions under control.