Leptin and Ghrelin: These hormones regulate hunger and satiety. Leptin signals fullness to the brain, while ghrelin stimulates appetite.

Insulin: High insulin levels can lead to fat storage, while improved insulin sensitivity supports weight loss.

Cortisol: The stress hormone cortisol can lead to fat accumulation, particularly around the abdomen.

Thyroid Hormones: Thyroid hormones influence metabolism. An underactive thyroid (hypothyroidism) can slow metabolism and lead to weight gain.

Estrogen and Testosterone: Hormonal imbalances, such as low estrogen in women or low testosterone in men, can affect body composition.

 Adiponectin: This hormone helps regulate glucose and fatty acid breakdown, potentially influencing weight loss.

Growth Hormone: Promotes fat breakdown and muscle growth, which can aid in weight loss.

Serotonin: Affects mood and appetite control. Low serotonin levels may lead to overeating.

Norepinephrine and Epinephrine: These "fight-or-flight" hormones can temporarily boost metabolism and fat burning.

Peptide YY (PYY) and GLP-1: These hormones help control appetite and may play a role in reducing food intake during weight loss efforts.