Why does my face look different?

Your face loses fat just like the rest of your body. Because facial fat pads are relatively small, even modest weight loss can produce noticeable changes — hollower cheeks, more visible bone structure, and sometimes looser skin around the jaw. This is a normal part of weight loss, not a side effect of the medication itself.

Will I get loose skin?

It depends on how much weight you lose, your age, genetics, and how quickly the loss happens. Losing more than about 20% of your body weight increases the likelihood of noticeable loose skin. Slower weight loss, adequate protein, and resistance training may help — but they cannot prevent it entirely if you lose a large amount of weight.

Is it normal to feel like I look older?

Some people feel this way, especially in the first 6-12 months when facial volume loss is most noticeable. Facial fat provides a natural "plump" look, and losing it can make lines and hollows more visible. This is not a side effect of the drug — it happens with any significant weight loss. Some people find their face settles over time as skin adjusts.

Can I prevent these changes?

You cannot fully prevent body changes during significant weight loss — that is the nature of the process. But you can influence the outcome. Adequate protein (60-100g per day), resistance training, staying hydrated, and gradual weight loss all help preserve muscle mass and support skin elasticity.

When should I worry about body changes?

Most changes are expected and gradual. Talk to your doctor if you notice sudden changes, extreme fatigue alongside body changes, hair loss that seems excessive, or if you are losing weight much faster than expected (more than about 1-2 kg per week consistently after the first month).

Will my body shape go back if I stop medication?

If you stop medication and regain weight, some body changes will reverse — your face will fill back out and body shape will shift. However, stretched skin may not fully tighten. Clinical trials show that most people regain a significant portion of lost weight within 1-2 years of stopping treatment.

Body Changes on Weight Loss Medication

What changes — and when

Weeks 1–4

Face may appear thinner first

Facial fat pads are small — even a few kilograms of loss shows here before anywhere else.

Months 1–3

Clothes fit differently before the scale moves much

Body composition shifts as fat redistributes. Waistbands loosen while the number on the scale changes slowly.

Months 3–6

Others start to notice

Visible changes to face, arms, and midsection. People start asking if you have lost weight.

6+ months

Body composition settles into a new shape

Weight loss slows toward a plateau. Skin begins a gradual 1–2 year process of tightening.

What changes — and when

Your body does not change all at once. Different areas change at different rates, and the timeline varies by how much weight you lose and how quickly. Here is what people typically notice and when.

Months 1-3

Early changes

Clothes feel looser, especially around the waist
Appetite drops noticeably — portions shrink
Bloating often reduces (less food volume, less water retention)
Energy may fluctuate — some days better, some worse
Others may not notice yet, but you feel different

Months 3-6

Visible changes

Face starts to look different — cheeks may hollow slightly, jawline more defined
People start commenting ("Have you lost weight?")
Body shape begins shifting — waist, arms, thighs
Skin may start to feel looser in some areas
Hair thinning may begin (affects about 5-15% of people)

Months 6-12

Significant changes

Facial changes become more pronounced
Loose skin may become noticeable, especially abdomen, arms, thighs
Clothing sizes change significantly — often 2-4 sizes
Your relationship with your reflection may feel complicated
Weight loss typically begins slowing as you approach a plateau

Month 12+

Stabilisation

Weight loss slows to a plateau for most people
Body shape continues to adjust subtly
Skin may gradually tighten over the following 1-2 years
Your new body becomes more familiar
Focus often shifts from loss to maintenance and muscle building

These timelines are averages. Some people see dramatic changes in 3 months; others take 6-9 months to notice much. The rate depends on your starting weight, the medication, your dose, and your body composition.

Face changes — why they are so noticeable

Your face is the body part you — and everyone else — see most. Even a few kilograms of fat loss from your face can create a visible difference. This is why facial changes often get the most attention, even when the rest of your body is changing too.

What people commonly notice:

Cheeks

Buccal (cheek) fat pads shrink, creating a more hollowed look. This is one of the first facial changes most people notice.

Jawline

Reduced fat under the chin and along the jaw makes the jawline more defined. Many people like this change.

Under-eye area

Less facial volume can make under-eye hollows or dark circles more visible. This is not the drug — it is reduced fat padding.

Skin elasticity

If you lose weight quickly, facial skin may not tighten as fast as the fat disappears. This tends to improve gradually over 6-18 months.

These facial changes happen with any significant weight loss — not just medication. People who lose the same amount of weight through diet and exercise experience the same changes. The medication just makes the weight loss happen faster, so the changes feel more sudden.

Skin changes during treatment

Skin is elastic, but it has limits. When you lose a large amount of weight — especially quickly — your skin may not tighten as fast as the fat underneath disappears. This is more common in some areas than others.

Abdomen

The most common area for loose skin after major weight loss. The more weight you lose from your midsection, the more likely you are to notice it.

Upper arms

Often called "bat wings." Loose skin on the underside of the upper arms is common after losing 15%+ of body weight.

Inner thighs

Skin laxity here can cause chafing and discomfort. Compression clothing can help in the meantime.

Chest and breasts

Breast tissue includes fat, so cup size often decreases. Skin may not tighten fully.

Factors that affect loose skin

Amount of weight lost — more loss means more risk of loose skin
Speed of weight loss — faster loss gives skin less time to adapt
Age — younger skin has more collagen and elastin
Genetics — some people naturally have more elastic skin
Sun exposure history — UV damage reduces skin elasticity
Smoking — reduces collagen production significantly

What you can do

You cannot fully prevent body changes during major weight loss. But you can influence how your body looks and feels through a few evidence-backed habits.

Critical

Eat enough protein (60-100g per day)

Protein preserves muscle mass during weight loss. Without enough protein, your body breaks down more muscle alongside fat — leading to a softer, less toned appearance and a slower metabolism.

Critical

Resistance training 2-3 times per week

Lifting weights or doing bodyweight exercises signals your body to keep muscle. This shapes how your body looks as you lose weight and helps fill out skin that would otherwise hang loose.

Important

Stay hydrated

Adequate water intake supports skin elasticity and overall health. It will not prevent loose skin, but dehydration makes skin look and feel worse.

Helpful

Do not rush the weight loss

If you are losing weight much faster than expected, talk to your doctor. A slightly slower pace gives your skin more time to adapt. That said, the rate is largely controlled by the medication and dose.

Helpful

Give your skin time

Skin continues to tighten for 1-2 years after weight stabilises. What looks like permanent loose skin at month 6 may improve significantly by month 18-24.

The emotional side of body changes

Many people expect to feel great as they lose weight. And often they do. But body changes can also bring complicated emotions that nobody warned them about.

"People treat me differently"

This is one of the most commonly reported experiences. Receiving more attention, compliments, or better treatment as you lose weight can feel good — but it can also make you angry or sad about how you were treated before.

"I do not recognise myself"

Your body and face change faster than your self-image can keep up. Looking in the mirror and seeing someone unfamiliar is disorienting. This usually resolves over time, but it can be genuinely unsettling.

"My family said I look sick"

People who knew you at a higher weight may perceive your weight loss as illness rather than health. This is especially common when facial changes are prominent. It says more about their adjustment than your health.

"I thought I would be happier"

Weight loss solves some problems and creates new ones. Loose skin, changing relationships, complicated feelings about food — these are real. It is okay to feel mixed about the process even when the results are positive.

Feeling complicated about body changes is normal — not a sign that something is wrong. If these feelings persist or become overwhelming, consider talking to a therapist who has experience with body image and weight. You do not need to navigate this alone.

When to talk to your doctor

Losing weight much faster than expected (more than about 1-2 kg per week consistently after month 1)
Significant hair loss — more than mild thinning
Extreme fatigue that does not improve with adequate food and sleep
New or worsening skin irritation from loose skin (especially in folds)
Feeling distressed about your appearance in a way that affects daily life
Muscle weakness or difficulty with activities you could do before

Written and maintained by one person · Built with agentic AI tools · Every number checked against the cited trial · Not medical advice

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Last reviewed: September 2026

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Medical disclaimer: This website is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any treatment. Prices shown are United States self-pay or list prices and vary by insurance and country.