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Hypodermis01:02

Hypodermis

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The hypodermis (the subcutaneous layer or superficial fascia) is present directly below the dermis. It connects the skin to the underlying fascia (fibrous tissue) of the bones and muscles. It is not strictly a part of the skin, although the border between the hypodermis and dermis can be difficult to distinguish. The hypodermis consists of well-vascularized, loose, areolar connective tissue and adipose tissue, which functions as a mode of fat storage and provides insulation and cushioning for...
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Pharmacokinetics in Obese Patients: Drug Absorption and Distribution01:25

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Obesity significantly alters the pharmacokinetic processes of drug absorption and distribution, presenting unique challenges in medical treatment. The increased fat tissue and decreased lean muscle in obese individuals can significantly affect how drugs are absorbed into the body and distributed across different tissues. This alteration can lead to variances in the effectiveness and safety of medications, necessitating adjustments in dosing or drug selection for obese patients.One notable...
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Drug Dosing: Obese Patients01:21

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In the United States, obesity is a prominent concern. It is linked to heightened mortality rates due to increased occurrences of conditions such as hypertension, atherosclerosis, coronary artery disease, and diabetes compared to nonobese individuals. A patient is classified as obese if their actual body weight surpasses the ideal or desirable body weight by 20%, based on Metropolitan Life Insurance Company data. Ideal body weights consider average weights and heights for males and females...
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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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Healing II: Complications01:24

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Complications during healing arise when tissue repair is altered by local or systemic factors. These changes involve abnormal collagen deposition, altered biomechanics, and reduced vascular supply, impairing restoration of normal structure and function.Loss of FunctionScar tissue differs significantly from the original tissue it replaces. In the skin, fibrosis lacks adnexal structures such as hair follicles, sebaceous glands, and sweat glands. Their absence reduces tactile sensitivity, impairs...
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Related Experiment Video

Updated: May 6, 2026

Quantitative Assessment Protocol for Facial Soft Tissue Volumetric Changes with Stereophotogrammetry
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Published on: December 9, 2025

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Weight Loss and Its Impact on Soft Tissue.

Sam Fathizadeh, Melanie D Palm, Deirdre Hooper

    Journal of Drugs in Dermatology : JDD
    |May 4, 2026
    PubMed
    Summary

    Rapid weight loss from various treatments can cause skin and structural issues. Management involves nutrition, exercise, devices, injectables, and surgery for optimal patient outcomes.

    Area of Science:

    • Dermatology and body composition science.

    Background:

    • Intentional rapid weight loss via bariatric surgery, medications (e.g., glucagon-like peptide-1 receptor agonists), or lifestyle changes leads to physiological effects beyond weight reduction.
    • Patients may experience decreased skin firmness, muscle mass reduction, and diminished bone density.

    Purpose of the Study:

    • To detail the dermatologic and structural effects of rapid weight loss.
    • To review current and emerging strategies for managing these consequences.

    Main Methods:

    • A narrative review of English-language literature from 2000-2025 was performed.
    • Databases used included PubMed and Google Scholar, focusing on soft tissue changes post-weight loss.

    Main Results:

    • Rapid weight loss affects collagen, elastic fibers, adipose tissue, muscle, and skeletal integrity.

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  • Management options include nutritional support, resistance training, energy-based devices, biostimulatory injectables, and surgical interventions.
  • Regenerative therapies are also being explored.

    • Conclusions:

    • The increasing prevalence of rapid weight loss necessitates dermatologic awareness of cosmetic and structural concerns.
    • A multidisciplinary, evidence-based approach is essential for effective patient management and improved outcomes.