When you drink liquid carbs, like the sugar in soda, your body doesn't register them the same way as, say, a piece of bread, according to a review of studies published in Current Opinion in Clinical Nutrition & Metabolic Care. That means, even though you're taking in calories, your fullness cues aren't likely to signal that you're satisfied once you finish off a can. And that can lead to consuming more overall.
Also some research shows that the human body is primed to consume most of its calories during daylight hours. But the lifestyle is problematic for many: Because family meals and dinners with friends often are scheduled for after sunset, "people who try to stop eating after 7pm can’t do it every day for the rest of their lives," says Dr. Seltzer, who supports an alternative strategy: Eating a hearty meal at your regular dinnertime.
Physiologically, calorie restriction has been shown in animals to increase lifespan and improve tolerance to various metabolic stresses in the body.  Although the evidence for caloric restriction in animal studies is strong, there is less convincing evidence in human studies. Proponents of the diet believe that the stress of intermittent fasting causes an immune response that repairs cells and produces positive metabolic changes (reduction in triglycerides, LDL cholesterol, blood pressure, weight, fat mass, blood glucose). [3,5] An understandable concern of this diet is that followers will overeat on non-fasting days to compensate for calories lost during fasting. However, studies have not shown this to be true when compared with other weight loss methods. 
This doesn't tell the whole story, because once the switch occurs, you need to burn ketones for some time to gain any benefits. Back in 2014, I wrote about new evidence (from Valter Longo's research) that a longer fast, such as 3 days or more provide significant long-term health benefits. Three days is a long time to fast, but Longo has said that you don't need to do it more than a few times per year.
The Drinking Detox. If you're not ready to change what you eat, you might start by changing what you drink. Many experts (and smart dieters) will tell you that the easiest way to lose weight is to give up alcohol either permanently or for a short time. Booze provides no significant nutritional benefits, it's full of calories and it may cause you to eat more junk food. For many dieters, simply saying no to alcohol is the best way to detox the body, sleep better at night, boost energy levels, and slim down.
Feasting eight hours and then fasting the following 16 hours? Or is it even better to fast two whole days a week and then enjoy eating without regrets for the rest of the week? Intermittent fasting, also known as 16:8 diet or 5:2 diet, is trendy. Numerous popular self-help books on this topic promise weight loss without yo-yo effect, as well as sustained changes in metabolism and resulting health benefits. The German Nutrition Society (DGE), on the other hand, warns that intermittent fasting is not suitable for long-term weight regulation. In addition, according to DGE, there is not enough scientific evidence on the long-term effects of this dieting method.
It’s likely the weight-loss tea that you’re most familiar with—and one that’s been shown to be protective against diabetes. When scientists look at black tea extract in animal studies, they find that black tea can help prevent weight gain when eating a high-fat diet, possibly because it blocks fat absorption during digestion. Of course, the research is preliminary, but black tea contains plant compounds called polyphenols—namely theaflavins and thearubigans—that may be responsible for the fat-blocking benefits. (Here’s more proof that black tea is jam-packed full of health benefits from a new study.)
In collaboration with a team of DKFZ researchers and scientists from Heidelberg University Hospital, Schübel examined 150 overweight and obese study participants over one year as part of the HELENA study. At the start of the study, they were randomly classified in three groups: One-third followed a conventional calorie restriction diet that reduced daily calorie intake by 20 percent. The second group kept to a 5:2 dietary plan that also saved 20 percent of calorie intake over the whole week. The control group followed no specific diet plan but was advised, like all other participants, to eat a well-balanced diet as recommended by DGE. Following the actual dieting phase, the investigators documented the participants' weight and health status for another 38 weeks.
There are so many teas that aid weight loss, it’s truly hard to pick just one. But oolong may just be one of the best brews to give you that long, lean look you crave. Oolong, a Chinese name for “black dragon,” is a light, floral tea that, like green tea, is also packed with catechins, which help to promote weight loss by boosting your body’s ability to metabolise lipids (fat). A study in the Chinese Journal of Integrative Medicine found that participants who regularly sipped oolong tea lost six pounds over the course of the six-week time period. That’s a pound a week! Shed more belly flab—rapidly—with one of the 4 Teas That Melt Fat!
The 3-Day Detox Diet. Don't have 2-weeks for a full detox? This 3-day detox is my own plan. It's easy, it's simple and there are no fancy foods required. In fact, it follows guidelines developed by the USDA's MyPlate nutritional program. This is the plan that I use when I need to reset my taste buds after a busy party season or a vacation full of indulgent foods.