When the rate of tissue damage exceeds the rate of repair, the result is a degenerative process characterized by disorganized collagen, increased ground substance, and neovascularization (growth of abnormal blood vessels into the damaged area)
Observational studies have tracked the effects of caloric restriction on lean, healthy individuals, and demonstrated that moderate restriction (2230% decreases in caloric intake from normal levels) improves heart function and reduces markers of inflammation (C-reactive protein, tumor necrosis factor [TNF]), risk factors for cardiovascular disease (LDL cholesterol, triglycerides, blood pressure), and diabetes risk factors (fasting blood glucose, insulin levels)
10 In the study by Jung et al, 11 no adverse effects were reported after 12 weeks of use among the 24 participants
Some patients notice improvements in energy or mood within a few weeks, while changes in body composition and libido may take longer
Ghrelin is a 28-amino-acid peptide that like ipamorelin and semorelin acts to increase growth hormone secretion
Adulteration with synthetic drugs (e.g., corticosteroids in anti-diarrheal preparations) or contamination with heavy metals and pesticides further undermines safety