The first described attempts at producing weight loss are those of Soranus of Ephesus, a Greek physician, in the second century AD. He prescribed elixirs of laxatives and purgatives, as well as heat, massage, and exercise. This remained the mainstay of treatment for well over a thousand years. It was not until the 1920s and 1930s that new treatments began to appear. Based on its effectiveness for hypothyroidism, thyroid hormone became a popular treatment for obesity in euthyroid people. It had a modest effect but produced the symptoms of hyperthyroidism as a side effect, such as palpitations and difficulty sleeping. 2,4-Dinitrophenol (DNP) was introduced in 1933; this worked by uncoupling the biological process of oxidative phosphorylation in mitochondria, causing them to produce heat instead of ATP. The most significant side effect was a sensation of warmth, frequently with sweating. Overdose, although rare, lead to a rise in body temperature and, ultimately, fatal hyperthermia. By the end of 1938 DNP had fallen out of use because the FDA had become empowered to put pressure on manufacturers, who voluntarily withdrew it from the market.
Another fave among calorie counters, Lose It! establishes a budget based on your weight loss goals and lets you track against it. Within the app, you can search for foods to track your intake, log exercise, and connect to wearables so you're not entering data into a billion apps. Upgrade to the premium version and you can track more than calories in versus calories out — there's additional accounting for carbs, fat, and body measurements — not to mention get help with exercise and meal planning.
A study published in the Journal of Research in Medical Sciences demonstrated that consistent green tea consumption increases metabolism and leads to weight loss. The study divided 63 participants into three groups. The first was a placebo, the second group consumed 2 cups of green tea every day and the third group consumed 4 cups of green tea every day. After 2 months, researchers found that the group that consumed 4 cups of green tea a day showed a significant decrease in body weight, body mass index and waist circumference (1).
The short answer: They probably won't help cleanse your body or burn fat. With all of those enthusiastic testimonials, it might be tempting to buy in, but manufacturers aren’t required to prove that their tea blends actually work. And indeed, there’s no convincing scientific evidence that these tea cleanses do any of the stuff that they say. They might contain ingredients that some findings have linked to weight loss, but those studies are often tightly controlled and use very high doses of an ingredient or compound—much more than what you’d get from a tea.
Orlistat can cause bothersome gastrointestinal side effects, such as flatulence and loose stools. It's necessary to follow a low-fat diet when taking this medication. Orlistat is also available in a reduced-strength form without a prescription (Alli). Rare cases of serious liver injury have been reported. However, no cause-and-effect relationship has been established.