The app's health section lists the benefits of quitting smoking along with a percentage bar that shows in real time when you will achieve them. For example, there are progress bars that signal when your blood pressure and pulse rate, as well as carbon monoxide and oxygen levels, will return to normal, and the time until your risk of heart attack will decrease and your lung function will increase.
Hypnotherapy is a form of therapy used to reprogram the subconscious mind. When under hypnosis, you put your mind and body into a heightened state of learning, making you more susceptible to suggestions for self-improvement or behavior modification. The goal is to put the subconscious and conscious mind in harmony, which in turn helps give you greater control over your behavior and emotions.
Unintentional weight loss may result from loss of body fats, loss of body fluids, muscle atrophy, or even a combination of these. It is generally regarded as a medical problem when at least 10% of a person's body weight has been lost in six months or 5% in the last month. Another criterion used for assessing weight that is too low is the body mass index (BMI). However, even lesser amounts of weight loss can be a cause for serious concern in a frail elderly person.
These apps and downloads can provide a great introduction to hypnosis and do have some anecdotal evidence suggesting a level of success. However they have been cited by hypnotherapists as being less compared successful to in person sessions. They widely state that the prerecorded hypnosis downloads cannot be tailored to your specific needs and cannot adapt to your reactions to the therapy while the session is in progress.
Some popular beliefs attached to weight loss have been shown to either have less effect on weight loss as commonly believed or are actively unhealthy. According to Harvard Health, the idea of metabolism being the "key to weight" is "part truth and part myth" as while metabolism does affect weight loss, external forces such as diet and exercise have an equal effect. They also commented that the idea of changing one's rate of metabolism is under debate. Diet plans in fitness magazines are also often believed to be effective, but may actually be harmful by limiting the daily intake of important calories and nutrients which can be detrimental depending on the person and are even capable of driving individuals away from weight loss.
It is used for a wide variety of applications, and studies into its efficacy are often of poor quality which makes it difficult to determine efficacy. Several recent meta-analyses and systematic reviews of the literature on various conditions have concluded that the efficacy of hypnotherapy is "not verified", that there is no evidence or insufficient evidence for efficacy.