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Furthermore, recent work has affirmed that a TD containing caffeine, citrus aurantium, garcinia, cambogia and chromium polynicotinate to increase calorie expenditure. Ingredients in these products have been shown to increase metabolism, decrease body fat and increase markers of lipolysis.
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While the number of TD has increased in recent years, they typically contain a mixture of caffeine, catechins, various herbal extracts, amino acids, neurostimulants and vitamins.
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Many consumers are turning to thermogenic drinks as a means to increase calorie and fat burning, energy levels and weight loss. As a result the use of nutritional supplements to aid weight loss has increased in popularity, with consumers spending an estimated $37.1 billion per year. Weight loss can be achieved by maintaining a proper diet and or starting an exercise regime however, adherence to conventional weight-loss programs has been poor. In addition to reducing medical costs, weight loss can reduce risk for cardiovascular disease, improve quality of life and ease the economic burden due to missed work and diminished work productivity. Medical expenses for obesity treatment and its related comorbities in 1998 accounted for 9.1% of total medical expenditures and was reported to be $78.5 billion, which would exceed $100 billion in today's economy. Recent epidemiological data suggests that 31% of the United States (U.S.) population is classified as obese, according to body mass index (BMI) standards, while 65% is classified as overweight. The prevalence of individuals who are classified as overweight and obese is a primary health concern due to their relationship to various cardiovascular diseases and associated comorbidities.
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