What Is ‘Set Point Theory’ and How Does It Affect Weight Loss?

Trying to lose weight can be incredibly difficult, especially when it feels like your body is working against you.

That seemingly stubborn refusal to drop pounds is behind a concept known as “set point theory.” It’s based on the idea that your body has a preferred weight range and works to keep you there.

But can you reset your set point weight and convince your body to accept a lower weight as your norm? Let’s look at the possibility with endocrinologist and obesity medicine specialist Peminda Cabandugama, MD.

What is set point theory?

Set point theory seeks to explain why losing weight — and sustaining that weight loss — can be so challenging. It’s based on the notion that your body craves stability and doesn’t take kindly to drastic change.

“The idea is that your body looks for homeostasis, or balance,” explains Dr. Cabandugama. “It wants to keep things where they’re at and where it feels comfortable.”

So, if you lose 10 pounds through dietary changes and exercise, the theory goes that your body looks for ways to put that weight back on. It basically mounts a defense against your weight loss efforts.

How does your body protect its weight set point?

Your body may utilize a variety of tactics to nudge your weight back up after you do all that hard work to change the number on your scale. Those potential defense mechanisms include:

• Slowing your metabolism: Your body may decrease your calorie burn by dialing down your metabolism. “It starts making changes to hold onto calories,” says Dr. Cabandugama.
• Hormone adjustments: Your body controls hunger messaging with hormones. To return to its weight set point, it may increase a hormone called ghrelin to make you feel hungrier, and decrease a hormone called leptin to reduce feelings of fullness.
• Food cravings: Your brain may start putting a lot of yummy thoughts into your head. “It’ll increase cravings to make you eat at a level that gets you back to the weight it wants,” says Dr. Cabandugama.
• Lowering energy levels: It’s tough to burn calories if you’re not active, right? Your brain may send signals of fatigue to reduce your motivation to move and keep you on the couch.

“Your body will try all of these different things after you lose weight to get back to its set point,” says Dr. Cabandugama. “It really illustrates why so many of us have problems trying to lose weight. You’re fighting yourself.”

What determines your set point weight?

Your weight set point can be traced back to a combination of factors, including:

• Genetics: Your genes can tip the scales by shaping metabolism, body fat storage and other weight-related factors. “There’s a clear correlation between genetics and weight,” says Dr. Cabandugama.
• Hormones: These chemical messengers that travel through your body influence your weight. Hormonal changes as you age may even push your set point higher.
• Behavior: Eating habits, exercise, sleep and stress can all influence body weight over time. Medications you take may also play a role.
• Environment: Your surroundings, daily routine and major life changes can all help dictate your body’s preferred weight. Early life experiences may also contribute to your future set point.

“Weight is multifactorial,” says Dr. Cabandugama. “It’s typically not only one thing.

The idea of a “set point” is a bit of a misnomer, too. It’s more of a “set range.” Dr. Cabandugama says most people see their weight fluctuate a few pounds either way. (For instance, if your “set point” is 150 pounds, you may swing between 152 and 148 pounds.)

Can you lower your set point?

It’s possible to lower your weight set point — but it isn’t easy, notes Dr. Cabandugama. Expect your body to put up a bit of a fight as it works to maintain a weight where it’s comfortable.

But with time and patience, you might convince your body to embrace a new and healthier number. Here are some ways to do it.

Dietary changes

Lasting weight loss doesn’t come from going on a crash diet to shed a few pounds quickly. In fact, a significant reduction in caloric intake is exactly the sort of thing that triggers your body to take protective action to put weight back on.

So, to keep your body happy, embrace a sustainable eating plan that fills your plate with nutritious foods. If you’re looking for a plan, the Mediterranean diet is a good option.

“Starving yourself for a week isn’t the answer,” emphasizes Dr. Cabandugama. “Focus on forming healthy eating habits that build a foundation for long-term success. That’s how you work toward lasting results.”

Exercise regularly

Working out is about more than just torching calories in the moment to sweat off some weight. A consistent exercise routine makes your body stronger and healthier, allowing it to operate more efficiently.

Over time, Dr. Cabandugama says this can increase your metabolism and energy levels, helping you lower your set point and better manage your weight.

Aim for a mix of aerobic and strength training exercise. The Physical Activity Guidelines for Americans recommends doing more than 300 minutes of exercise per week for weight loss and long-term weight management.

Manage stress

Ever wonder why you hit the snacks hard when you’re stressed? It’s because your system releases more cortisol, a hormone that can drive food cravings to deliver energy for a quick boost.

Look to adopt coping mechanisms (like meditation) to lower your stress levels and help your body find balance.

Get enough sleep

Your body works best when it gets enough time to rest and recover. That’s especially important when you’re trying to lose weight and lock in a new set point, says Dr. Cabandugama.

Think about it. Being tired affects your energy levels and decision-making, which can make it more difficult to exercise or make healthy choices. Plus, a lack of sleep increases stress and cortisol release.

Bottom line? Consistently getting seven to eight hours of sleep per night can help you reset your set point.

Talk to your healthcare provider

You don’t have to go through weight loss alone. Talk with a healthcare provider to get assistance or find treatment options — including medications like GLP-1s — that might help you lose weight and lower your set point.

“The best way to reach that goal is different for everybody,” notes Dr. Cabandugama. “It might not happen right away. Things might not work like you think they will, and that’s OK. Just keep at it and work with people who can help you eventually find success.”