{"id":35155,"date":"2023-04-10T23:21:01","date_gmt":"2023-04-10T23:21:01","guid":{"rendered":"https:\/\/www.humnutrition.com\/blog\/?p=35155"},"modified":"2023-04-20T17:16:37","modified_gmt":"2023-04-20T17:16:37","slug":"ghrelin-and-leptin","status":"publish","type":"post","link":"https:\/\/www.humnutrition.com\/blog\/ghrelin-and-leptin\/","title":{"rendered":"Are These Hunger Hormones Sabotaging Your Diet and Weight Loss Goals?"},"content":{"rendered":"

Meet ghrelin and leptin, two hunger hormones that play a role in food cravings, weight, and beyond. Discover what each is exactly and how to tell if they’re imbalanced. Plus: tips to support healthy levels of both.<\/em><\/p>\n\n\n

When you hear \u201chormones,\u201d your brain might immediately jump to your period<\/a>, or maybe melatonin. BTW, hormones are your body\u2019s powerful chemical messengers<\/a>, and there are over 50 known hormones<\/a> pumped out by our endocrine system. They play a vital role in everything from growth and reproduction to mood and sleep<\/a>.<\/p>\n\n\n

Hormones also impact metabolism and appetite\u2014and that\u2019s where ghrelin and leptin come in.\u00a0<\/p>\n\n\n

\u201cOptimal health is related to these \u2018hunger hormones\u2019 and your metabolic reaction to the foods you eat,\u201d says Florence Comite, MD,<\/a> an endocrinologist and the founder of the Comite Center for Precision Medicine and Health<\/a> in New York City, Miami Beach, Florida and Palo Alto, California.<\/p>\n\n\n

Together, leptin and ghrelin regulate our sensations of hunger and satiety by sending signals to our brain, adds Ammara Aziz, MD<\/a>, an endocrinologist with Northwest Community Healthcare in Arlington Heights, Illinois. When these power players are balanced, our bodies are better able to maintain a consistent weight. Yet if things get too weighed down on one side of the ghrelin vs. leptin seesaw, your appetite and the way your body uses energy can get thrown out of whack.<\/p>\n\n\n

Ahead, learn more about ghrelin and leptin, including how to tell if your levels might fall outside of the \u201cnormal\u201d range. And later: simple strategies you can try today to support balanced hunger hormones.<\/p>\n\n\n

What Is Ghrelin?<\/h2>\n\n\n

Ghrelin is a hormone produced mainly by the stomach. Small amounts are also released by the small intestine, pancreas and brain, Dr. Aziz explains.<\/p>\n\n\n

\u201cGhrelin communicates with the brain to let it know that you\u2019re hungry,\u201d adds Patricia Bannan, MS, RDN,<\/a> a dietitian based in Los Angeles and the author of From Burnout to Balance<\/em><\/a>. \u201cWhen your stomach is empty or nearing empty, it releases ghrelin. Once you eat a meal or snack and you feel satiated<\/a>, ghrelin levels will fall.\u201d<\/p>\n\n\n

To remember that this is the main \u201chunger hormone,\u201d Dr. Comite tells her patients and students to think of \u201cgrrrhelin,\u201d like a growling stomach. Beyond stimulating appetite, ghrelin also affects carbohydrate metabolism, fat storage, blood sugar, and other processes in the body.<\/p>\n\n\n\n

\"Woman<\/figure>\n\n\n

What Is Leptin?<\/h2>\n\n\n

You can think of leptin as the yin to ghrelin\u2019s yang. This hormone regulates appetite and energy balance to maintain your body weight over time (in addition to other important tasks like immune function). But instead of being released by the stomach like ghrelin, leptin is emitted by our white adipose (aka fat) tissue.<\/p>\n\n\n

\u201cLeptin\u2019s purpose is to tell the body that you\u2019re full, and it plays an important role in weight maintenance. When you have adequate fuel sources and your body is satisfied, leptin levels will increase to communicate to the brain that you don\u2019t need to consume more energy,\u201d Bannan says. \u201cWhen you\u2019re hungry or unfed, leptin will fall.\u201d<\/p>\n\n\n

Since the level of leptin in our blood is directly related to how much body fat we have, higher levels of leptin are seen in individuals who live in larger bodies. Research shows that the leptin-to-ghrelin ratio\u00a0tends to increase with increasing body mass index<\/a> (BMI).\u00a0<\/p>\n\n\n

Over time, elevated levels of leptin can lead to leptin resistance, in which the body loses its sensitivity to the hormone. This can impact the body’s ability to experience feelings of fullness.<\/p>\n\n\n\n

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If rapid weight loss<\/a> occurs, a decrease in leptin can trigger the body to enter what Dr. Aziz calls \u2018starvation mode,\u2019 which she says makes it difficult to lose more weight. (Psst: This is a very good sign it might be time for a reverse diet<\/a>.)<\/p>\n\n\n

\u201cProlonged fasting associated with intense hunger is likely due to very low leptin levels, especially with weight and fat loss,\u201d Dr. Comite says. \u201cYour body is saying \u2018I\u2019m starving; I\u2019d better eat!\u2019\u201d This is why you may experience intense hunger pangs, cravings, or symptoms of binge eating after skipping meals<\/a>, Dr. Comite continues.<\/p>\n\n\n

How to Tell If Your Ghrelin and Leptin Levels May Be Imbalanced<\/h2>\n\n\n

\u201cThere are many factors that can impact both ghrelin and leptin levels, including genetics, body fat levels, and an energy deficit,\u201d Bannan says.\u00a0<\/p>\n\n\n

The only way to directly assess levels of ghrelin and leptin is to get a blood test. However, Dr Aziz says that these tests are rarely performed. Hunger hormone levels are only checked in very specific cases, such as in children who fall under the classification of class III obesity<\/a>.<\/p>\n\n\n

If you\u2019re on a calorie-restricted diet, though, cyour ghrelin levels are likely high. This is your body\u2019s savvy way of nudging the brain to feed itself. Also, the more body fat you have, the more leptin you\u2019ll have pumped into your bloodstream to try to cue your brain that you\u2019re all set, so your leptin levels are likely higher.<\/p>\n\n\n\n

\"Woman<\/figure>\n\n\n

7 Ways to Promote Healthy Hunger Hormone Levels<\/h2>\n\n\n

As of yet, scientists aren\u2019t aware of any foods, prescriptions, or supplements<\/a> that could potentially help the body to make leptin optimally to signal fullness. That said, there are several lifestyle habits that can help your leptin and ghrelin levels stay within healthy ranges.<\/p>\n\n\n

1. Balance Your Macros<\/h3>\n\n\n

Choose meals and snacks that provide protein<\/a>, carbohydrates (ideally with some fiber<\/a>), and healthy fats<\/a>. Doing so can support blood sugar stability<\/a>, which is an important part of avoiding energy spikes and crashes as well as food cravings. \u201cThese balanced meals and snacks will also help your body regulate your natural hunger and fullness cues by supporting ghrelin and leptin balance,\u201d Bannan says.<\/p>\n\n\n

2. Prioritize Protein<\/h3>\n\n\n

While all three macronutrients are important, protein is the most effective at suppressing ghrelin, Dr. Comite adds. This means it\u2019s also the most satiating macronutrient of the trio. For a 150-pound person, aiming for about 27 to 35 grams of protein per meal is a great goal to ensure you\u2019re consuming enough protein<\/a> throughout the day.<\/p>\n\n\n\n

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3. Fuel Regularly<\/h3>\n\n\n

Restrictive fasting is not your BFF if you\u2019re aiming to harness the power of your natural hunger hormone patterns. \u201cNever allow yourself to get famished. Eat at regular intervals throughout the day\u2014about every two to four hours,\u201d Dr. Comite advises. Each of us is unique, so experiment to determine the eating strategy that works best for your own biochemistry.\u00a0<\/p>\n\n\n

4. Load Up on Nutrient-Dense Foods<\/h3>\n\n\n

A simple way to feel full on fewer calories (if that\u2019s the goal): Add volume to your plate. Focus on nutrient-dense yet low-calorie foods, such as:<\/p>\n\n\n\n