Do Physical Activity And Diet Apps Improve The Health Of Users?

Medically reviewed by Arianna Williams, LPC, CCTP and Julie Dodson, MA, LCSW
Updated November 16, 2024by BetterHelp Editorial Team

According to the Pew Research Center, 85% of adults in the United States own a smartphone, with 87 million users taking advantage of a health app monthly in 2020. Since 2015, the number of health-focused apps has doubled. In 2020, more than 90,000 health apps were added to app stores, bringing the total to 350,000, according to IQVIA's 2021 Digital Health Trends Report.

These statistics reveal that people seek online support to make healthy lifestyle choices. Mobile health apps give their users immediate health information and may offer tracking tools for diet and exercise activities. To understand the effectiveness and popularity of these apps, it may be beneficial to take an in-depth look at studies that report the efficacy of health apps in improving health, nutrition, and lifestyle. 

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Norwegian studies: Health apps may be effective 

Previous studies on diet and physical activity apps have focused on app content, assessing whether they follow current nutritional recommendations and relevant theory. Researchers in Norway identified a gap in how diet apps have been analyzed. Little research had been done to examine these apps' perceived effectiveness and whether users perceived that an App helped them make changes. The Norwegian study was designed to measure user satisfaction and health improvements by asking the following questions: 

  • How did users believe they were affected by using a diet or physical activity app?
  • Is app use associated with improved diet and physical activity?

Who were the study participants? 

The study was conducted in two parts. Researchers began with focus group discussions, and a larger-scale questionnaire followed these. The focus groups recruited via email and were comprised students and staff at the Norwegian University of Life Sciences. Two focus groups were conducted with individuals who used diet and physical activity apps, consisting of two male and 13 female individuals. One focus group was conducted for non-users, comprising six male and two female participants. 

A larger sample of participants completed the questionnaire, recruited through an email sent by a market analysis company. Five hundred people completed the questionnaire, and they evenly represented app users and non-users, as well as male and female individuals. 

How was the study on physical activity and diet apps conducted? 

All three focus groups were led by a moderator and videotaped with consent from participants. Users talked about why they use health apps, the impact, the pros and cons of specific apps, and topics they'd want future releases to focus on. Non-users discussed why they did not use an app, whether it was out of choice or due to some barrier, and their opinions regarding health-focused apps.

By indexing key topics, researchers discovered that diet and physical activity apps were two specific types the participants mentioned most often. Based on the information obtained from the focus groups, a questionnaire was designed to inquire specifically about diet and physical activity apps.

The questionnaire consisted of questions about diet and physical activity, including food choices, seeking nutrition information, joining a gym, and making weight loss goals. Other questions were about the health apps themselves, including how often they were used, a rating scale of effectiveness, and barriers to health app use. The questionnaire also asked about demographics and included questions about food and health concerns. 

App usage questions looked at several factors, including:

  • Duration of use
  • Type of app used
  • Frequency of use
  • Goals for using the app
  • Perceived effectiveness of the app

What were the study results? 

Analysis of the focus group discussions revealed three themes relating to the influence of diet and physical activity apps, including confidence, awareness, and motivation in their eating and exercise habits. The influence that apps had on users' social life, self-education, and self-assessment directly influenced their eating and exercise choices. 

Questionnaire responses were overwhelmingly positive regarding the perceived effectiveness of apps. For diet app users:

  • 5% said that the app helped them eat more fruits and vegetables
  • 9% believe that it helped them eat less fast food
  • 9% perceived they chose healthier food products
  • 57% said they drank less sweetened beverages
  • 50% interpreted that the apps helped them eat more low-fat dairy products 

In statistics about the physical health activity app users: 

  • 75% believed that the app helped them exercise more
  • 4% said the app helped them increase the intensity of their workouts
  • 2% thought the app supported them in exercising for longer periods

Diet apps were linked with several behavior changes that included paying more attention to calorie information, seeking out information about food, and choosing low-fat products. Physical activity apps often lead to behavioral changes, including seeking information about exercise, joining a gym, and competing in challenges with family and friends.

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Do health and fitness apps work?

Based on the information provided by participants, the most significant impact of diet and physical activity apps occurred for individuals who used them frequently over an extended period. When app users met goals and experienced success using the apps, their confidence and motivation increased.

In summary

Through focus groups and a questionnaire, researchers in Norway examined the impact of diet and physical activity apps. Nearly three-quarters of diet app users thought the app encouraged them to eat more fruits and vegetables, and over half of the participants consumed less fast food and sugary drinks, choosing healthier food products. Findings suggested that apps increased accountability and motivation and that users enjoyed the success of meeting goals.

Future research

Several factors can impact an individual's successful use of a diet app, including age, education level, and current health status. Future research can investigate the development of apps tailored to appeal to people in various subgroups. The options available in expanding app options can be vast, as demonstrated by the fact that diet app users in this study noted that it was challenging to find Norwegian foods when recording what they ate.

The study indicated that using apps increases eHealth literacy, which is the ability to seek health information from online sources to make decisions about your health. While this research focused on health choices related to diet and exercise, other health-related information could be presented using apps, including material about mental health. Future research can also focus on mental health apps' creation, usage, and influence.

The mental health benefits of proper nutrition and exercise 

Healthy nutrition has been the focus of several studies, as nutrition-related conditions like type II diabetes have grown in numbers since the turn of the century. Poor nutrition and a sedentary lifestyle increase the risk of developing the following physical and mental health conditions:  

  • Metabolic syndrome
  • Type II diabetes
  • Cardiovascular disease
  • Depression
  • Hypertension
  • Cancer
  • Anxiety

While it may be public knowledge that nutritionally poor diets and low physical activity lead to health problems, the idea that nutrition can affect mental health can be less well-known and understood. However, research supports that a sedentary lifestyle and poor diet can worsen symptoms of mental health conditions like depression and anxiety. 

Researchers from the University of Manchester published an article highlighting the connection between healthy eating habits and improved mental health. Results from the research revealed that a diet rich in highly refined carbohydrates increases one's risk for diabetes and can harm psychological well-being. 

How to improve your nutritional intake 

According to research, you can make a few dietary choices that may improve your mental and physical health simultaneously, including the following. 

Eat a Mediterranean diet 

A synthesis of 37 studies confirmed that a Mediterranean diet could decrease the risk of depression and the severity of pre-existing depressive symptoms. A Mediterranean diet consists of olive oil, vegetables, nuts, fish, bread, legumes, fruits, vegetables, and eggs.

Choose foods rich in omega-3 fatty acids 

While more research may be valuable, studies suggest that omega-3 fatty acids may offer symptom relief to those living with postpartum depression and bipolar disorder. Eight studies acknowledged promising evidence for a link between omega-3 fatty acids and reduced depression, but a definite correlation has yet to be confirmed. As omega-3 fatty acids are part of a heart-healthy diet, the risk of taking them is minimal.

Eat foods rich in vitamin D

There is a possibility that vitamin D deficiency plays a role in depression. For example, treating seasonal affective disorder (previously known as seasonal depression) with an hour of light therapy can decrease symptoms of depression significantly due to stimulating the natural synthesis of vitamin D within the body. Eating or drinking products that contain vitamin D, such as salmon, milk, egg yolks, and fortified orange juice, might positively impact your mental health.

Foster sustainable exercise and nutrition habits

Stress may incite the desire to eat foods that offer "comfort," which are often processed foods like refined sugars and saturated fats. A poor diet combined with little to no exercise can quickly lead to health risks. Try to find habits you can sustain over time, and reach out for support if you struggle to do so. 

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Connect with a professional 

Diet can significantly impact mental health. Being proactive about your physical and mental health can be positive and self-sufficient, often alongside healthy lifestyle changes like exercise. You can utilize health apps and self-motivated lifestyle changes to promote your health. 

However, diet and exercise apps are not a replacement for mental health support from a licensed therapist. Stress, anxiety, and depression may affect your ability to practice healthy habits and accomplish daily tasks. If you struggle to start a healthy schedule, you might benefit from talking to a therapist. If you experience symptoms that make it challenging to attend in-person sessions, you can also try online therapy through a platform like BetterHelp. 

With an online therapy platform, you can connect with a provider from home using a smart device and internet connection. In addition, you can choose between phone, video, or chat sessions. A synthesis of five studies evaluating the impact of online therapy confirmed that a moderate or significant therapeutic alliance was formed in each of the studies. In two studies, the bond formed with the online therapist was stronger than in traditional face-to-face counseling. 

Takeaway

The above studies showcase several ways physical health and diet apps can improve mental and physical well-being. If you want to learn more about these apps or use a mental health app, consider contacting a therapist online or in your area for guidance and support.
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