Woman with type 1 diabetes shares the 15-minute habit that helps lower her blood sugar

Managing blood sugar can involve medication, careful food choices and constant monitoring, but one woman living with type 1 diabetes says a surprisingly ordinary habit has become one of her go-to strategies when her glucose begins climbing. Emily Goldman, who has managed the condition for about 12 years, says taking a brisk 15-minute walk can sometimes make a noticeable difference to her readings. An endocrinologist says there is science behind why movement can help but also serious situations when exercising may be unsafe.

Her Go-To Habit Costs Nothing

Writing for Prevention, Goldman explained that she relies on supplemental insulin because her pancreas does not produce insulin on its own. Over the years, she noticed that when her blood sugar was rising or remained higher than she wanted, going outside for a brisk walk often helped. Goldman says a 15-minute walk has lowered her personal readings by anywhere from 20 to 100 mg/dL, although the effect varies depending on factors including insulin resistance. These figures describe her individual experience and should not be taken as a guaranteed result for others. Her continuous glucose monitor allowed her to see the changes happening after she started moving.

Why Can Walking Affect Blood Sugar?

Endocrinologist Dr Florence Comite told Prevention that contracting muscles need energy during exercise. The body draws on stored sugar in the muscles and liver, while muscle cells also become more sensitive to insulin and take up glucose from the bloodstream. In Goldman's case, however, walking to bring down high glucose works when she has insulin in her system. This distinction is particularly important for people with type 1 diabetes.

When Should You Take a Walk?

Dr Comite pointed to research examining blood glucose responses after eating white bread and then completing 10 minutes of stationary cycling. Participants exercised either 15 or 45 minutes after eating. The decrease in post-meal glucose was seen in the group that exercised 45 minutes afterwards, compared with the sedentary control group.

The researchers suggested that waiting around 30 minutes after eating before beginning physical activity could be useful for reducing the glycaemic response. That does not mean the same timing will be appropriate for everyone, particularly people taking insulin or other glucose-lowering medication.

Walking Isn't Always the Right Answer

The seemingly simple advice comes with an important warning. People with type 1 diabetes or very high blood glucose may have elevated ketones when there is insufficient effective insulin. Exercising under those circumstances can be dangerous because high ketone levels can progress to diabetic ketoacidosis (DKA), a potentially life-threatening complication requiring medical attention. Dr Comite therefore recommends that people with type 1 diabetes, or those experiencing very high glucose, check for ketones before exercising. Exercise should also be avoided during low blood sugar, as glucose can fall further, potentially causing weakness, dizziness or loss of consciousness.

A Small Habit With an Important Caveat

Goldman's experience shows why something as ordinary as walking can become a useful part of diabetes management. The science supports physical activity as a way for muscles to use glucose more effectively, but a walk is not an insulin replacement, prescribed medication or an individual treatment plan. For people managing diabetes, the bigger takeaway is not simply to walk whenever a glucose reading rises. It is to understand how exercise affects their own body and to know when moving could help and when it could instead pose a risk.