Everything You Need to Know About the O-Shot and M-Shot
By: The Hidden Epidemic of Sexual Health and What We Can Do
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Tempe 480.968.5673
Glendale 602.374.3374
Phoenix 602.441.3305
Chandler480.447.1165
Many people notice that losing weight becomes more difficult as they get older. In their twenties, weight loss may have seemed relatively straightforward. Eating healthier or increasing exercise often produced noticeable results.
After the age of thirty-five, however, many individuals begin to experience slower progress even when they maintain the same healthy habits.
This change is not simply a matter of willpower or motivation. Hormones play a significant role in regulating metabolism, appetite, energy balance, and body composition.
As hormone levels gradually shift with age, these biological changes can influence how the body stores fat and responds to weight loss efforts.
Understanding these hormonal changes can help patients develop more effective strategies for maintaining metabolic health.
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Hormones act as chemical messengers that regulate many functions within the body. Several hormones influence metabolism and body weight.
These include
Together, these hormones help control how the body uses energy, stores fat, and regulates hunger.
When hormone levels change, the body’s metabolic balance can shift as well.
One of the most noticeable changes associated with aging is a gradual decline in metabolic rate.
Metabolic rate refers to the number of calories the body burns to maintain basic functions such as breathing, circulation, and cellular repair.
Several factors contribute to this decline.
Muscle mass tends to decrease with age, especially when individuals do not engage in regular strength training. Because muscle tissue burns more calories than fat tissue, losing muscle can slow metabolism.
Hormonal changes may also influence how efficiently the body processes nutrients and stores energy.
As a result, the same diet and exercise routine that worked in earlier years may not produce the same results later in life.
Women often experience several hormonal transitions throughout adulthood that can influence body composition.
During the years leading up to menopause, estrogen and progesterone levels begin to fluctuate. This phase, often referred to as perimenopause, may occur in the late thirties or forties.
These hormonal shifts can affect
Many women notice that weight gain occurs more easily around the abdomen during this time.
Estrogen plays an important role in regulating fat storage and metabolic health. When estrogen levels decline, the body may store fat differently than it did earlier in life.
Men also experience gradual hormonal shifts as they age.
Testosterone levels tend to decline slowly beginning in the thirties and forties. Testosterone supports muscle development, metabolic function, and energy levels.
When testosterone levels decrease, men may experience
These changes can make weight loss more challenging without adjustments to nutrition, physical activity, and lifestyle habits.
Stress hormones can also influence weight gain and metabolic health.
Cortisol is released when the body experiences physical or emotional stress. While cortisol plays an important role in the body’s stress response, chronically elevated levels may contribute to weight gain.
High cortisol levels are associated with
Modern lifestyles often involve ongoing stress related to work, family responsibilities, and limited sleep. Managing stress effectively can be an important part of supporting healthy metabolism.
The thyroid gland produces hormones that regulate metabolic rate.
When thyroid function is reduced, metabolism may slow and weight gain can occur more easily.
Symptoms associated with reduced thyroid activity may include
A medical evaluation can help determine whether thyroid function may be influencing weight management challenges.
Maintaining lean muscle mass becomes increasingly important with age.
Muscle tissue contributes to daily calorie expenditure and supports metabolic health. Strength training helps preserve muscle mass while supporting overall physical function.
Combining resistance training with adequate protein intake can help maintain muscle during weight loss and support long term metabolic balance.
Nutrition plays a key role in supporting hormonal health and metabolism.
Balanced nutrition strategies may include
These habits help regulate blood sugar levels and support stable energy throughout the day.
Avoiding extreme calorie restriction is also important, as severe dieting can further disrupt hormonal balance.
Because hormonal and metabolic changes vary from person to person, individualized treatment plans often produce the best results.
Physicians can evaluate factors such as
Based on these findings, healthcare providers can recommend strategies designed to support sustainable weight management.
For some patients, medical guidance may include structured weight management programs, nutrition counseling, and metabolic monitoring.
Although hormonal changes can influence metabolism, they do not make weight loss impossible.
With the right approach, many individuals can maintain a healthy weight and improve metabolic health well into later decades of life.
Successful strategies often include
When these habits are supported by medical guidance, patients often achieve more sustainable results.
Hormonal changes that occur after the age of thirty-five can influence metabolism, appetite, and body composition. These natural biological shifts may slow metabolic processes and make traditional dieting approaches less effective.
Understanding the role hormones play in weight regulation allows patients to approach weight management in a more informed and strategic way. When metabolic health, hormone balance, nutrition, and lifestyle factors are considered together, the body often responds more predictably.
In my experience treating patients, the most successful outcomes occur when weight loss strategies are personalized and medically supervised. With the right guidance, tools, and support, sustainable progress is achievable at any stage of life.
Many individuals feel frustrated when weight loss becomes more difficult after their mid-thirties. In many cases, this difficulty is not simply about willpower or diet discipline. Physiological changes such as shifts in estrogen, testosterone, cortisol, and insulin sensitivity can affect how the body stores and burns energy.
Recognizing these changes allows patients to pursue solutions that are better aligned with their body’s current metabolic needs. This may include structured nutrition plans, medically supervised weight management programs, metabolic monitoring, or physician-guided therapies that support healthy metabolic function.
For many patients, having medical guidance removes the guesswork and allows them to focus on strategies that are safe, sustainable, and appropriate for their individual health profile.
Individuals may benefit from physician-guided weight management if they notice:
A medical evaluation can help determine whether metabolic or hormonal factors are contributing to weight challenges and identify appropriate treatment options.
Working with a qualified medical provider allows patients to explore personalized strategies that support both weight management and long-term metabolic health.
Hormonal changes after the age of thirty-five can influence metabolism, appetite, and body composition. These biological shifts can make weight loss more challenging, but they do not make it impossible.
By understanding how hormones affect metabolism, patients can develop strategies that support healthier weight management over time.
With personalized care and evidence-based approaches, sustainable progress remains achievable at every stage of life.
Jensen, M. D., et al. (2014). Guidelines for the Management of Overweight and Obesity in Adults. Journal of the American College of Cardiology.
https://pubmed.ncbi.nlm.nih.gov/24239920/
Hall, K. D., & Kahan, S. (2018). Maintenance of Lost Weight and Long-Term Management of Obesity. Medical Clinics of North America.
https://pubmed.ncbi.nlm.nih.gov/30098710/
Sumithran, P., & Proietto, J. (2013). The defense of body weight: A physiological basis for weight regain after weight loss. Clinical Science.
https://pubmed.ncbi.nlm.nih.gov/23327839/
Bray, G. A., et al. (2016). Management of obesity. The Lancet.
https://pubmed.ncbi.nlm.nih.gov/27174430/
Endocrine Society. Pharmacological Management of Obesity Clinical Practice Guideline.
https://www.endocrine.org/clinical-practice-guidelines/pharmacological-management-of-obesity
Harvard T.H. Chan School of Public Health. Obesity Prevention Source.
https://www.hsph.harvard.edu/obesity-prevention-source/
Why is it harder to lose weight after age 35?
After the age of thirty-five, several biological changes can influence metabolism and body composition. Hormonal shifts, including changes in estrogen, testosterone, insulin sensitivity, and cortisol regulation, can affect how the body stores fat and uses energy. In addition, gradual muscle loss that occurs with aging may reduce resting metabolic rate, meaning the body burns fewer calories at rest. These combined factors can make weight management more challenging, even when diet and exercise habits remain the same.
Can hormone changes cause weight gain?
Hormones play an important role in regulating appetite, fat storage, and energy use. Changes in hormones such as estrogen, testosterone, thyroid hormones, and insulin can influence body composition and metabolic efficiency. When these systems become imbalanced, individuals may experience increased fat storage, reduced energy levels, or difficulty maintaining a healthy weight.
Do metabolism changes affect weight loss?
Yes. Metabolism refers to the processes the body uses to convert food into energy. Over time, metabolic rate can change due to aging, hormonal shifts, muscle mass changes, and lifestyle factors. A slower metabolic rate can make it easier for the body to store excess energy as fat. Medical evaluation can help identify metabolic factors that may influence weight management.
Why does belly fat increase with age?
As hormone levels change with age, the body may become more likely to store fat around the abdominal area. Factors such as reduced muscle mass, insulin resistance, and elevated cortisol levels can contribute to increased visceral fat. This type of fat is metabolically active and may affect overall metabolic health, making it an important factor in long-term weight management.
Why do diets stop working over time?
Repeated dieting can lead to metabolic adaptation, where the body adjusts its energy expenditure in response to reduced calorie intake. This can slow metabolic rate and increase hunger signals, making it more difficult to continue losing weight or maintain previous weight loss. Medical guidance can help patients develop strategies that support metabolism and long-term weight stability.
What is medically supervised weight loss?
Medically supervised weight loss is a physician-guided approach to weight management that evaluates metabolic health, hormone balance, lifestyle factors, and individual health history. Treatment plans may include nutritional guidance, lifestyle coaching, metabolic monitoring, and physician-supervised medications when appropriate. This structured approach is designed to improve both weight outcomes and long-term metabolic health.
How do GLP-1 medications help with weight loss?
GLP-1 medications work by influencing appetite regulation, slowing gastric emptying, and improving blood sugar control. These effects can help patients feel fuller for longer periods and reduce overall calorie intake. When used as part of a medically supervised weight management program, these medications may support meaningful and sustainable weight loss.
When should someone seek medical support for weight loss?
Individuals may benefit from medical guidance if they experience persistent weight gain, difficulty losing weight despite lifestyle changes, increased abdominal fat accumulation, fatigue, or symptoms that may suggest hormonal imbalance. A physician can evaluate these factors and develop a personalized plan to support safe and sustainable weight management.
By Dr. Samuel Zuniga, ND
Valley Medical Weight Loss | Chandler, Arizona
Many people notice that losing weight becomes more difficult as they get older. In their twenties, weight loss may have seemed relatively straightforward. Eating healthier or increasing exercise often produced noticeable results.
After the age of thirty-five, however, many individuals begin to experience slower progress even when they maintain the same healthy habits.
This change is not simply a matter of willpower or motivation. Hormones play a significant role in regulating metabolism, appetite, energy balance, and body composition.
As hormone levels gradually shift with age, these biological changes can influence how the body stores fat and responds to weight loss efforts.
Understanding these hormonal changes can help patients develop more effective strategies for maintaining metabolic health.
Subscribe for expert insights on building confidence, overcoming mental barriers, and achieving lasting weight loss success. Join patients who are transforming both body and mind.Join our newsletter for expert insights on treating melasma, hyperpigmentation, and other skin concerns. Our medical aesthetic team shares practical advice to help you achieve clear, radiant skin.
Hormones act as chemical messengers that regulate many functions within the body. Several hormones influence metabolism and body weight.
These include
Together, these hormones help control how the body uses energy, stores fat, and regulates hunger.
When hormone levels change, the body’s metabolic balance can shift as well.
One of the most noticeable changes associated with aging is a gradual decline in metabolic rate.
Metabolic rate refers to the number of calories the body burns to maintain basic functions such as breathing, circulation, and cellular repair.
Several factors contribute to this decline.
Muscle mass tends to decrease with age, especially when individuals do not engage in regular strength training. Because muscle tissue burns more calories than fat tissue, losing muscle can slow metabolism.
Hormonal changes may also influence how efficiently the body processes nutrients and stores energy.
As a result, the same diet and exercise routine that worked in earlier years may not produce the same results later in life.
Women often experience several hormonal transitions throughout adulthood that can influence body composition.
During the years leading up to menopause, estrogen and progesterone levels begin to fluctuate. This phase, often referred to as perimenopause, may occur in the late thirties or forties.
These hormonal shifts can affect
Many women notice that weight gain occurs more easily around the abdomen during this time.
Estrogen plays an important role in regulating fat storage and metabolic health. When estrogen levels decline, the body may store fat differently than it did earlier in life.
Men also experience gradual hormonal shifts as they age.
Testosterone levels tend to decline slowly beginning in the thirties and forties. Testosterone supports muscle development, metabolic function, and energy levels.
When testosterone levels decrease, men may experience
These changes can make weight loss more challenging without adjustments to nutrition, physical activity, and lifestyle habits.
Stress hormones can also influence weight gain and metabolic health.
Cortisol is released when the body experiences physical or emotional stress. While cortisol plays an important role in the body’s stress response, chronically elevated levels may contribute to weight gain.
High cortisol levels are associated with
Modern lifestyles often involve ongoing stress related to work, family responsibilities, and limited sleep. Managing stress effectively can be an important part of supporting healthy metabolism.
The thyroid gland produces hormones that regulate metabolic rate.
When thyroid function is reduced, metabolism may slow and weight gain can occur more easily.
Symptoms associated with reduced thyroid activity may include
A medical evaluation can help determine whether thyroid function may be influencing weight management challenges.
Maintaining lean muscle mass becomes increasingly important with age.
Muscle tissue contributes to daily calorie expenditure and supports metabolic health. Strength training helps preserve muscle mass while supporting overall physical function.
Combining resistance training with adequate protein intake can help maintain muscle during weight loss and support long term metabolic balance.
Nutrition plays a key role in supporting hormonal health and metabolism.
Balanced nutrition strategies may include
These habits help regulate blood sugar levels and support stable energy throughout the day.
Avoiding extreme calorie restriction is also important, as severe dieting can further disrupt hormonal balance.
Because hormonal and metabolic changes vary from person to person, individualized treatment plans often produce the best results.
Physicians can evaluate factors such as
Based on these findings, healthcare providers can recommend strategies designed to support sustainable weight management.
For some patients, medical guidance may include structured weight management programs, nutrition counseling, and metabolic monitoring.
Although hormonal changes can influence metabolism, they do not make weight loss impossible.
With the right approach, many individuals can maintain a healthy weight and improve metabolic health well into later decades of life.
Successful strategies often include
When these habits are supported by medical guidance, patients often achieve more sustainable results.
Hormonal changes that occur after the age of thirty-five can influence metabolism, appetite, and body composition. These natural biological shifts may slow metabolic processes and make traditional dieting approaches less effective.
Understanding the role hormones play in weight regulation allows patients to approach weight management in a more informed and strategic way. When metabolic health, hormone balance, nutrition, and lifestyle factors are considered together, the body often responds more predictably.
In my experience treating patients, the most successful outcomes occur when weight loss strategies are personalized and medically supervised. With the right guidance, tools, and support, sustainable progress is achievable at any stage of life.
Many individuals feel frustrated when weight loss becomes more difficult after their mid-thirties. In many cases, this difficulty is not simply about willpower or diet discipline. Physiological changes such as shifts in estrogen, testosterone, cortisol, and insulin sensitivity can affect how the body stores and burns energy.
Recognizing these changes allows patients to pursue solutions that are better aligned with their body’s current metabolic needs. This may include structured nutrition plans, medically supervised weight management programs, metabolic monitoring, or physician-guided therapies that support healthy metabolic function.
For many patients, having medical guidance removes the guesswork and allows them to focus on strategies that are safe, sustainable, and appropriate for their individual health profile.
Individuals may benefit from physician-guided weight management if they notice:
A medical evaluation can help determine whether metabolic or hormonal factors are contributing to weight challenges and identify appropriate treatment options.
Working with a qualified medical provider allows patients to explore personalized strategies that support both weight management and long-term metabolic health.
Hormonal changes after the age of thirty-five can influence metabolism, appetite, and body composition. These biological shifts can make weight loss more challenging, but they do not make it impossible.
By understanding how hormones affect metabolism, patients can develop strategies that support healthier weight management over time.
With personalized care and evidence-based approaches, sustainable progress remains achievable at every stage of life.
Jensen, M. D., et al. (2014). Guidelines for the Management of Overweight and Obesity in Adults. Journal of the American College of Cardiology.
https://pubmed.ncbi.nlm.nih.gov/24239920/
Hall, K. D., & Kahan, S. (2018). Maintenance of Lost Weight and Long-Term Management of Obesity. Medical Clinics of North America.
https://pubmed.ncbi.nlm.nih.gov/30098710/
Sumithran, P., & Proietto, J. (2013). The defense of body weight: A physiological basis for weight regain after weight loss. Clinical Science.
https://pubmed.ncbi.nlm.nih.gov/23327839/
Bray, G. A., et al. (2016). Management of obesity. The Lancet.
https://pubmed.ncbi.nlm.nih.gov/27174430/
Endocrine Society. Pharmacological Management of Obesity Clinical Practice Guideline.
https://www.endocrine.org/clinical-practice-guidelines/pharmacological-management-of-obesity
Harvard T.H. Chan School of Public Health. Obesity Prevention Source.
https://www.hsph.harvard.edu/obesity-prevention-source/
Why is it harder to lose weight after age 35?
After the age of thirty-five, several biological changes can influence metabolism and body composition. Hormonal shifts, including changes in estrogen, testosterone, insulin sensitivity, and cortisol regulation, can affect how the body stores fat and uses energy. In addition, gradual muscle loss that occurs with aging may reduce resting metabolic rate, meaning the body burns fewer calories at rest. These combined factors can make weight management more challenging, even when diet and exercise habits remain the same.
Can hormone changes cause weight gain?
Hormones play an important role in regulating appetite, fat storage, and energy use. Changes in hormones such as estrogen, testosterone, thyroid hormones, and insulin can influence body composition and metabolic efficiency. When these systems become imbalanced, individuals may experience increased fat storage, reduced energy levels, or difficulty maintaining a healthy weight.
Do metabolism changes affect weight loss?
Yes. Metabolism refers to the processes the body uses to convert food into energy. Over time, metabolic rate can change due to aging, hormonal shifts, muscle mass changes, and lifestyle factors. A slower metabolic rate can make it easier for the body to store excess energy as fat. Medical evaluation can help identify metabolic factors that may influence weight management.
Why does belly fat increase with age?
As hormone levels change with age, the body may become more likely to store fat around the abdominal area. Factors such as reduced muscle mass, insulin resistance, and elevated cortisol levels can contribute to increased visceral fat. This type of fat is metabolically active and may affect overall metabolic health, making it an important factor in long-term weight management.
Why do diets stop working over time?
Repeated dieting can lead to metabolic adaptation, where the body adjusts its energy expenditure in response to reduced calorie intake. This can slow metabolic rate and increase hunger signals, making it more difficult to continue losing weight or maintain previous weight loss. Medical guidance can help patients develop strategies that support metabolism and long-term weight stability.
What is medically supervised weight loss?
Medically supervised weight loss is a physician-guided approach to weight management that evaluates metabolic health, hormone balance, lifestyle factors, and individual health history. Treatment plans may include nutritional guidance, lifestyle coaching, metabolic monitoring, and physician-supervised medications when appropriate. This structured approach is designed to improve both weight outcomes and long-term metabolic health.
How do GLP-1 medications help with weight loss?
GLP-1 medications work by influencing appetite regulation, slowing gastric emptying, and improving blood sugar control. These effects can help patients feel fuller for longer periods and reduce overall calorie intake. When used as part of a medically supervised weight management program, these medications may support meaningful and sustainable weight loss.
When should someone seek medical support for weight loss?
Individuals may benefit from medical guidance if they experience persistent weight gain, difficulty losing weight despite lifestyle changes, increased abdominal fat accumulation, fatigue, or symptoms that may suggest hormonal imbalance. A physician can evaluate these factors and develop a personalized plan to support safe and sustainable weight management.
By: The Hidden Epidemic of Sexual Health and What We Can Do
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