Why Diary Products, Carbohydrates, Chocolate and etc..Cause Acne??

1. Carbohydrates:
One study found that people who frequently consumed added sugars had a 30% greater risk of developing acne, while those who regularly ate pastries and cakes had a 20% greater risk.                                    
This increased risk may be explained by the effects refined carbohydrates have on blood sugar and insulin levels.
Refined carbohydrates are absorbed quickly into the bloodstream, which rapidly raises blood sugar levels. When blood sugars rise, insulin levels also rise to help shuttle the blood sugars out of the bloodstream and into your cells.However, high levels of insulin are not good for those with acne.
Insulin makes androgen hormones more active and increases insulin-like growth factor 1 (IGF-1). This contributes to acne development by making skin cells grow more quickly and by boosting sebum production.On the other hand, low-glycemic diets, which do not dramatically raise blood sugars or insulin levels, are associated with reduced acne severity.                                                                                                                           While the research on this topic is promising, more is needed to further understand how refined carbohydrates contribute to acne.

2. Dairy Products:
Many studies have found a link between milk products and acne severity in teenagers.Two studies also found that young adults who regularly consumed milk or ice cream were four times more likely to suffer from acne.     
However, the studies conducted so far have not been high-quality. The research to date has focused mainly on teenagers and young adults and has only shown a correlation between milk and acne, not a cause and effect relationship.It is not yet clear how milk may contribute to the formation of acne, but there are several proposed theories.  
Milk is known to increase insulin levels, independent of its effects on blood sugar, which may worsen acne severity.  Cow’s milk also contains amino acids that stimulate the liver to produce more IGF-1, which has been linked to the development of acne.
 Although there is speculation on why drinking milk may worsen acne, it is unclear whether dairy plays a direct role. More research is needed to determine if there is a specific amount or type of dairy that may aggravate acne.

3. Fast Food:
Acne is strongly associated with eating a Western-style diet rich in calories, fat and refined carbohydrates. Fast food items, such as burgers, nuggets, hot dogs, french fries, sodas and milkshakes, are mainstays of a typical Western diet and may increase acne risk. One study of over 5,000 Chinese teenagers and young adults found that high-fat diets were associated with a 43% increased risk of developing acne. Regularly eating fast food increased the risk by 17%.                           
A separate study of 2,300 Turkish men found that frequently eating burgers or sausages was linked to a 24% increased risk of developing acne.                                                                                                    It is unclear why eating fast food may increase the risk of developing acne, but some researchers propose that it may affect gene expression and alter hormone levels in a way that promotes acne development .
However, it is important to note that most of the research on fast food and acne has used self-reported data. This type of research only shows patterns of dietary habits and acne risk and does not prove that fast food causes acne. Thus, more research is needed.

4. Foods Rich in Omega-6 Fats:
Diets containing large amounts of omega-6 fatty acids, like the typical Western diet, have been linked to increased levels of inflammation and acne. 
This may be because Western diets contain large amounts of corn and soy oils, which are rich in omega-6 fats, and few foods that contain omega-3 fats, like fish and walnuts.This imbalance of omega-6 and omega-3 fatty acids pushes the body into an inflammatory state, which may worsen acne severity.
Conversely, supplementing with omega-3 fatty acids may reduce levels of inflammation and has been found to reduce acne severity.  While the links between omega-6 fatty acids and acne are promising, there have been no randomized controlled studies on this topic, and more research is needed.

5. Chocolate:
Chocolate has been a suspected acne trigger since the 1920s, but so far, no consensus has been reached. Several informal surveys have linked eating chocolates with an increased risk of developing acne, but this is not enough to prove that chocolate causes acne.  A more recent study found that acne-prone males who consumed 25 grams of 99% dark chocolate daily had an increased number of acne lesions after just two weeks. Another study found that males who were given capsules of 100% cocoa powder daily had significantly more acne lesions after one week compared to those given a placebo.                                                                                                                                            Exactly why chocolate might increase acne is unclear, although one study found that eating chocolate increased the reactivity of the immune system to acne-causing bacteria, which may help explain these findings.                                                                                                                                              While recent research supports a link between chocolate consumption and acne, it remains unclear whether chocolate actually causes acne.

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