Does an apple a day keep the doctor away?

By Maggie Aime
Posted on March 03, 2026

An apple a day alone won’t save you a trip to the doctor, but it may be a good start toward better health. The phrase “An apple a day keeps the doctor away” comes from an old Welsh saying that encouraged eating apples at bedtime to ward off illness.

While they’re not quite the medical miracle the saying makes them sound like, apples do have many health benefits.

May support heart health: Apples contain soluble fiber that can help lower low-density lipoprotein (LDL) cholesterol levels. LDL is considered the “bad” cholesterol since high levels can lead to plaque buildup in your arteries, which can cause heart issues. Apples also have polyphenols, which are plant compounds that may help reduce the risk of cardiovascular disease.

May manage and lower the risk of Type 2 diabetes: Despite their natural sweetness, apples have a low glycemic index, meaning they don’t cause big spikes in blood sugar. The fiber in apples slows down how quickly sugar is absorbed, helping to keep your levels steady. The polyphenols in apples may also help your body use insulin more effectively.

May protect cells from damage: Polyphenols and vitamin C in apples act as antioxidants. These substances help protect cells from oxidative stress, which is linked to chronic conditions like heart disease and cancer. Eating apples regularly may help your body boost its natural defenses against cell damage.

May reduce inflammation: Chronic inflammation is at the root of many serious health problems. Quercetin, a type of polyphenol in apples, helps lower levels of substances that trigger chronic inflammation and calm the body’s immune response. Over time, this may help reduce your risk of conditions linked to long-term inflammation, such as arthritis and high blood pressure.

May support gut health: Apples have pectin, a substance that acts as a natural thickener. Pectin feeds the good bacteria in your gut and helps them thrive. These friendly bacteria support digestion, help reduce inflammation, and keep your gut healthy. A healthier gut helps maintain a strong immune system and may even influence your mood and mental well-being.

May help manage weight: Because they’re high in water and fiber, apples can help you feel full longer. People who regularly eat apples tend to have better overall diet quality and lower obesity rates. This is especially true for children. Plus, the polyphenols in apples may help reduce visceral fat (a type of belly fat linked to metabolic problems).

May lower cancer risk: While apples aren’t a guaranteed protection against cancer, including them in your diet may help lower your risk of certain types of cancer. Regular apple consumption has been linked to a reduced risk of breast, lung and colorectal cancer. Polyphenols may help stop abnormal cells from multiplying and trigger the death of damaged cells.

May support brain health: As you get older, your brain becomes more vulnerable to oxidative stress, which is linked to memory problems and dementia. The antioxidants in apples, especially phloretin, may help protect brain cells from this damage and reduce inflammation that can lead to cognitive decline.

Health delivers relevant information in clear, jargon-free language that puts health into context in peoples’ lives. Online at Health.com.