The following review examines the advantages and disadvantages of several popular diet plans. Many of the diets emphasize the restriction of one nutrient as the basis for their plan. The other food groups and nutrients are allowed in limited or unlimited quantities, depending on the plan. Weight loss is impossible without a calorie restriction, so each diet has to provide fewer calories than your body needs to maintain your weight. Any diet that claims otherwise can end up causing weight gain. Various diet plans are summarized below to help you learn to review them for safety and effectiveness.

^ Jump up to: a b c d e f g h i Payne, C; Wiffen, PJ; Martin, S (18 January 2012). Payne, Cathy (ed.). "Interventions for fatigue and weight loss in adults with advanced progressive illness". The Cochrane Database of Systematic Reviews. 1: CD008427. doi:10.1002/14651858.CD008427.pub2. PMID 22258985. (Retracted, see doi:10.1002/14651858.cd008427.pub3. If this is an intentional citation to a retracted paper, please replace {{Retracted}} with {{Retracted|intentional=yes}}.)
In 2008 between US$33 billion and $55 billion was spent annually in the US on weight-loss products and services, including medical procedures and pharmaceuticals, with weight-loss centers taking between 6 and 12 percent of total annual expenditure. Over $1.6 billion a year was spent on weight-loss supplements. About 70 percent of Americans' dieting attempts are of a self-help nature.[23][24]
As with all diets, nothing works for everyone, and nothing works forever. The celebrity endorsements are great when they work, but the celebrities who regain their weight once they discontinue this plan are proving that this is not the answer for everyone. Many people prefer to be able to eat food they prepare and do not like the idea of prepackaged foods.
Stimulus (cue) control involves learning what social or environmental cues seem to encourage undesired eating, and then changing those cues. For example, you may learn from reflection or from self-monitoring records that you're more likely to overeat while watching television, or whenever treats are on display by the office coffee pot, or when around a certain friend. You might then try to change the situation, such as by separating the association of eating from the cue (don't eat while watching television), avoiding or eliminating the cue (leave the coffee room immediately after pouring coffee), or changing the circumstances surrounding the cue (plan to meet your friend in a nonfood setting). In general, visible and reachable food items are often cues for unplanned eating.
In nutrition, diet is the sum of food consumed by a person or other organism.[1] The word diet often implies the use of specific intake of nutrition for health or weight-management reasons (with the two often being related). Although humans are omnivores, each culture and each person holds some food preferences or some food taboos. This may be due to personal tastes or ethical reasons. Individual dietary choices may be more or less healthy.
Intermittent fasting -- here's a thorough guide to intermittent fasting -- is not a diet, although you can follow an intermittent fasting schedule in conjunction with a calorie reduction plan. It's just a different way of eating -- and a great way to burn more fat and change your body composition and shift your muscle to fat ratio toward a greater percentage of muscle.

The initial phase of this diet should be avoided. This two-week phase claims to produce a weight loss of eight to 13 pounds with severe dietary restrictions; including fruit, dairy, and starches. Phases like this are usually included so people see quick results, but are limited in time because they are not nutritionally balanced and can't be followed for a long period. It tends to be more discouraging than motivating to lose quickly and to feel like you are "on a diet." Long-term weight loss and maintenance takes time, patience, and a lot of hard work. It's best to begin slowly and to always consume a nutritionally balanced diet.


The final possible culprit behind stubborn weight issues may be the stress hormone, cortisol. Too much cortisol will increase hunger levels, bringing along subsequent weight gain. The most common cause of elevated cortisol is chronic stress and lack of sleep (see tip #10), or cortisone medication (tip #9). It’s a good idea to try your best to do something about this.
Intentional weight loss is the loss of total body mass as a result of efforts to improve fitness and health, or to change appearance through slimming. Weight loss in individuals who are overweight or obese can reduce health risks,[1] increase fitness,[2] and may delay the onset of diabetes.[1] It could reduce pain and increase movement in people with osteoarthritis of the knee.[2] Weight loss can lead to a reduction in hypertension (high blood pressure), however whether this reduces hypertension-related harm is unclear.[1][not in citation given]
This study took 83 subjects, estimated the daily calorie requirements of each person (aka their maintenance levels), and then created a caloric deficit of 30%. They then divided them up into 3 groups. The first had only 4% of their total daily calorie intake coming from carbs. The second had 50% of their total calorie intake coming from carbs. The third had 70% of their total calorie intake coming from carbs. Guess what happened? Even though some people were eating a VERY LOW carb diet and others were eating a VERY HIGH carb diet… they all lost the same amount of weight and body fat. Why? Because low carb or high carb isn’t what makes us gain or lose fat. Calories are, regardless of how many of them come from carbs.
While LDL is fairly marginally elevated on average, there are exceptions. Some people, possibly about 5%, may see significant LDL elevations. While this might not have the same implication as elevated LDL in other circumstances, such as with insulin resistance and small dense LDL particles etc., there is no data to prove this is the case. Here’s our guide to possible ways to reduce this effect:
"Chewing seems to stimulate the gut to make appetite-suppressing peptide hormones," says Dr. Cypess. Plus, the more you chew, the more thoroughly you break down food, which may release nutrients into your blood faster and give your brain time to register that you're full. From now on, focus on eating slowly at every meal. Put down your fork between bites and work your way up to 40 chews per mouthful of food.

Some antidepressant medications can cause weight gain, especially the older tricyclic antidepressants (TCAs) such as Tryptizol, Saroten, and Clomipramine; as well as newer drugs such as Remeron (Mirtazapine). Lithium (for manic-depressive disorder) often causes weight gain. The most common antidepressants known as SSRI’s (for example Citalopram and Sertraline) usually don’t impact weight significantly. More on depression
×