SAEDNEWS: Entering a weight-loss journey without understanding nutritional physiology not only fails to produce lasting results but can also cause irreversible harm to the body. In this article, we examine the harms of unprincipled dieting, such as damage to the immune system, reduced bone density, and psychological and hormonal problems.
According to Saednews, The desire to achieve fitness in the shortest possible time leads many people toward self-directed and unscientific diets. Many individuals, in order to lose weight faster, suddenly eliminate entire food groups, unaware that the human body is a highly complex biochemical system. Weight loss must be accompanied by the preservation of vital organ health, hormonal balance, and metabolic stability.
Entering a weight-loss journey without understanding nutritional physiology not only fails to produce sustainable results but can also cause irreversible damage to the body. In this article, we examine the harms of improper dieting, such as immune system damage, decreased bone density, and psychological and hormonal problems.
One of the body’s first reactions to very low-calorie and self-imposed diets is entering a defensive survival mode. When calorie intake is suddenly and inaccurately reduced, the thyroid gland slows its activity and metabolic hormone secretion decreases. As a result, the body continues functioning with minimal energy. Consequently, even a small deviation from the diet or a return to normal eating can lead to rapid and excessive weight regain in the form of fat.
This cycle, known as the “yo-yo diet,” significantly increases the risk of fatty liver disease and insulin resistance.

Hair loss and skin changes are among the most common visible signs of internal hormonal imbalance. Deficiencies in micronutrients such as zinc, biotin, and essential amino acids in non-professional diets cause hair to enter the shedding phase.
Additionally, low levels of iron and ferritin—common among many women—can lead to chronic anemia. Insufficient protein intake also forces the body to prioritize vital organs, leaving hair and nail health at the lowest priority. Other effects include severe skin dryness and premature aging.
Many people are pleased with rapid weight loss, while in reality a large portion of this loss comes from muscle tissue and water, not fat. Muscles are the body’s metabolic engines, and their reduction leads to overall weakness, including in the heart and other muscles.
In diets lacking scientific balance of macronutrients, the body begins breaking down its own protein stores to supply glucose for the brain. This results in fatigue, weakness, and body sagging. Restoring muscle mass requires months of structured exercise and medically supervised nutritional therapy.
Rapid and unscientific weight loss is one of the main causes of gallstone formation, often leading to surgery and gallbladder removal. When a person fasts for long periods or completely eliminates healthy fats, the gallbladder does not contract regularly, causing bile to become concentrated. Cholesterol in this thickened bile can crystallize and form stones.
In addition, a lack of dietary fiber leads to chronic constipation and disruption of the gut microbiome, resulting in bloating, indigestion, and severe abdominal pain after meals.
Strict and unrealistic diets not only harm the body but also strain mental health, turning the relationship with food into a stressful and unhealthy one. Psychological pressure from severe dietary restrictions increases cortisol (stress hormone) levels, which can contribute to anxiety, irritability, and abdominal fat accumulation.
Many individuals following unsupervised diets develop disorders such as binge eating or obsessive calorie counting. Over time, these issues can reduce self-esteem, lead to social withdrawal, and cause depression, which is often more difficult to treat than physical weight gain.

A healthy lifestyle is not a race but a thoughtful journey requiring a personalized and scientific plan based on each individual’s biological characteristics. A proper diet should be designed according to body mass index, fat-to-muscle ratio, age, gender, laboratory results, and medical history.
A physician evaluates liver, kidney, thyroid function, and nutrient reserves to create a balanced diet that includes all essential micro- and macronutrients. Lifestyle changes should ensure that the body does not perceive stress, allowing fat loss to occur naturally and sustainably. Any self-directed approach in this field poses a serious risk to internal organ health.
Physiological changes during weight loss require continuous monitoring and professional adjustment to prevent complications such as osteoporosis, hormonal disorders, and cognitive decline. Using calorie-counting apps or generic diets without considering individual differences may help with weight loss but can also carry significant risks.
The safest and most effective approach to achieving a desired body shape is consulting a qualified nutrition specialist who can design a personalized and evidence-based plan. True beauty reflects the internal health of the body’s organs.