Preventing loose skin after weight loss

While the amount of weight lost is a primary factor, age, skin elasticity, and the speed of weight loss also play a role. Understanding this can help manage expectations and provide insight into how best to support your skin during weight loss.

Several factors influence whether loose skin develops, and this can change significantly between people.

Speed of weight loss

One of the most important factors that can contribute to loose skin is the speed of weight loss. When you lose weight very quickly, your skin may not have enough time to shrink and adjust to your new body shape.

For example, extreme crash diets or the rapid weight loss that can follow bariatric surgery may occur faster than the skin can adapt, making sagging more noticeable.

While some loose skin is common after substantial weight loss, how much this happens is different for every person and can be reduced in some cases. In addition to avoiding too much sun, getting adequate sleep, and eating a balanced diet, here are some extra steps you can take to prevent damage to the skin during weight loss.

Strength training

Incorporating strength training into your weight loss journey can help prevent loose skin. Building and maintaining muscle mass beneath the skin can fill out areas and make sagging less noticeable.

Prioritise protein

Protein plays a crucial role in skin health and muscle retention during weight loss. It helps maintain lean muscle mass, which can reduce the appearance of loose skin. Make sure you're getting enough protein in your diet in the UK, the recommendation is to eat 0.75g of protein per kilo of body weight per day. You can get protein from a range of foods, including:

✓ lean meats

✓ fish

✓ eggs

✓ dairy

✓ legumes (beans, lentils, and chickpeas)

✓ protein-rich snacks

Skin hydration

Hydration is essential for supporting skin elasticity. There are a few ways you can encourage skin hydration, including:

• drinking 6 to 8 glasses of fluids a day
• using skin care products that contain ingredients that support skin barrier health, such as hyaluronic acid
• applying hydrating creams to maintain skin elasticity

➤ While hydration alone will not prevent loose skin entirely, it is a helpful step in maintaining skin health during your weight loss journey.

Some loose skin may tighten over time, especially after gradual weight loss. However, the degree to which skin can naturally tighten depends on several factors, including the amount of weight lost, speed of weight loss, age and skin elasticity.

While some people notice tightening without intervention, significant loose skin may not fully retract without professional treatment such as radiofrequency therapy or laser therapy. It’s important to have realistic expectations and understand that skin tightening can be a gradual process.

Loose skin usually is not medically harmful, but it can lead to specific physical or emotional effects.

Physical side effects

Excess skin, especially after significant weight loss, can cause irritation, chafing, and rashes, particularly in areas where skin folds, such as the underarms, abdomen, and thighs. A study examining patients after major weight loss (35kg) found that loose skin significantly impaired daily physical activity in half of them.

Emotional side effects

Loose skin can also affect body image and self-confidence, and you may feel self-conscious about your appearance. If excess skin is affecting how you’re feeling, speak with your doctor.

Some people opt for surgery to remove excess skin, especially if it causes physical discomfort or emotional distress. Doctors usually only offer surgery after weight loss has stabilised and when non-surgical approaches have been explored. Procedures include abdominoplasty (tummy tuck) or arm lifts.

However, on the NHS, this is considered cosmetic surgery, and so would only be offered in specific circumstances. For example, if excess skin causes health problems like persistent rashes or hygiene issues. Otherwise, you would have to pay for this privately.

If you’re using weight loss treatments like Wegovy or Mounjaro, it is possible to lose weight quickly, and this can increase the possibility of visible loose skin. Speak with your doctor about preventing this issue. For example, using a lower dose might mean you lose weight more slowly, giving your skin time to adapt.