Numerous studies have shown that some preservatives and food additives may indeed contribute to increased appetite and consequently weight gain. Several studies convinced scientists that some preservatives do disrupt the natural communication between the brain and the gut. This means that the signal indicating that we are full often comes late or not at all. As a result, we end up eating more than we should, which can lead to excessive weight gain.

In one extensive study, researchers examined the effects of three substances commonly found in our daily diet and environment:

• Butylated hydroxytoluene (BHT): This is an antioxidant often added to food, such as cereal mixes, to keep them fresh for longer and prevent the fats in them from becoming rancid. However, some studies suggest that BHT may affect our hormonal system and increase appetite.
  
  
• Perfluorooctanoic acid (PFOA): This is a chemical used in the production of Teflon pans and other kitchenware. Although PFOA is not directly present in food, small amounts can be released during cooking and transfer to food. Some studies have shown that PFOA may be associated with metabolic disorders and weight gain.
  
  
• Tributyltin (TBT): This substance is commonly used in boat paints and is also present in some types of seafood. TBT can influence hormonal balance and disrupt the functioning of the endocrine system, contributing to weight gain.

Interestingly, a study involving over 50,000 people showed that those who regularly consume foods high in additives have a 25% higher likelihood of being overweight. It was also found that preservatives affect the level of the hormone leptin – the hormone that regulates hunger and satiety. When leptin levels are disrupted, the body does not receive the proper signal that enough food has been consumed.

Experts recommend avoiding processed foods containing artificial additives as much as possible and opting for fresh, natural ingredients. This way, we can better maintain hormonal balance and more easily control our body weight.

As Dr. Michael Greger, author of the book How Not to Diet, has said, the key to a healthy body weight lies mainly in choosing whole foods without added chemicals: Natural foods rich in fiber, vitamins, and minerals satiate us without consuming too many calories.

Therefore, it is important to read labels on packaging and avoid products containing ingredients such as BHT, PFOA, or TBT. In the long run, this will help us take better care of our health and well-being.