Los músculos del hombre después de los 40: la fuerza que protege todo lo demás
Las cargas de siempre pesan más, el agarre es más débil y subir escaleras te deja sin aliento. Con la edad, el músculo se va derritiendo sin que se note, y no es solo una cuestión de aspecto. La buena noticia: el músculo responde al entrenamiento a cualquier edad.
Por qué importa
- El músculo es el principal «consumidor» de azúcar. Cuanto menos tienes, más le cuesta al metabolismo y más rápido crece la barriga.
- El músculo sostiene los huesos. Junto con el músculo, también se pierde hueso en silencio, y los hombres llevan mal las fracturas.
- La fuerza es independencia. La debilidad lleva a las caídas, y las caídas, a las fracturas.
La testosterona sostiene el músculo y el hueso. Pero la terapia con testosterona no protege el hueso de las fracturas: en un gran ensayo no hubo menos fracturas. Lo que protege el hueso y el músculo es la carga y la comida.
Lo que funciona
Fuerza 2–3 veces por semana, con progresión. La base: sentadillas, tirones y empujes. Cuando resulte fácil, un poco más de peso o más repeticiones. La carga tiene que notarse: las últimas repeticiones cuestan.
Un poco de impacto. Subir a un escalón, saltos suaves si las articulaciones lo permiten: es la señal para que el hueso siga fuerte.
Más proteína de la que crees. 1,2–1,6 g por kilo de peso al día, 30–40 g en cada comida. Con la edad, el músculo responde peor a la proteína, así que necesitas más. Por ejemplo: huevos con requesón, una ración de carne o pescado del tamaño de la palma de la mano, lentejas con queso.
Vitamina D y calcio, sobre todo de la comida: pescado, lácteos, verduras de hoja.
Equilibrio. Los ejercicios de equilibrio previenen caídas.
¿Y los suplementos?
- La creatina: unos 5 g al día junto con el entrenamiento de fuerza dan un aumento de fuerza pequeño pero real. Con enfermedad renal, solo después de hablar con un médico.
- La proteína en polvo es un buen apoyo si no llegas a la proteína con la comida.
- Los «potenciadores de testosterona» no hacen crecer el músculo.
Cómo seguirlo sin aparatos
El reloj y el anillo no miden el músculo ni el hueso. La referencia es la fuerza y la función: ¿te pesan más las cargas de siempre?, ¿se debilita tu agarre?, ¿te levantas fácilmente de una silla sin usar las manos?
Cuándo ir al médico
- La debilidad aumenta rápido, sin una causa clara.
- Has tenido una caída o una fractura por un golpe leve.
- Has perdido altura o has empezado a encorvarte.
- Llevas mucho tiempo tomando corticoides o sigues un tratamiento que baja la testosterona.
Qué probar esta semana
- Dos entrenamientos de fuerza de 30–40 minutos en días distintos.
- Una fuente de proteína en cada comida, empezando por el desayuno.
- Cada día, al menos un tramo de escaleras en lugar del ascensor.
En qué se basa
Este artículo se basa en temas de la base de conocimiento de VIA-L. Estos son los estudios publicados que hay detrás:
- Testosterone and Bone Health in Men — Current Osteoporosis Reports, 2026 doi
- Hormonal Modulation With Withania Somnifera: Systematic Review and Meta-Analysis of Randomized-Controlled Trials — Planta Medica, 2026 doi
- Key Findings on the Efficacy and Safety of Testosterone Therapy From Two Large Randomized Trials — The Journal of Clinical Endocrinology and Metabolism, 2026 doi
- Metabolic Dysfunction–Associated Steatotic Liver Disease in Adults — JAMA, 2026 doi
- The Effect of Chromium Picolinate Supplementation on Cardiometabolic Biomarkers, Tumor Necrosis Factor-Α Gene Expression, and DNA Damage in Subjects With Metabolic Syndrome: A Randomized Placebo-Controlled Clinical Trial — Biological Trace Element Research, 2026 doi
- Do the Effects of Early Time-Restricted Eating Vary by Cardiometabolic Phenotype, Age, Sex, or Race? A Secondary Analysis of a Randomized Controlled Trial — The Journal of Nutrition, 2026 doi
- Efficacy of Exercise-Based Interventions for Metabolic Syndrome: An Umbrella Review With Meta-Analyses — Obesity Reviews : An Official Journal of the International Association for the Study of Obesity, 2026 doi
- 4 — Diabetes Care, 2026 doi
- Safety of 12-Months Administration of Ashwagandha (Withania Somnifera) Standardized Root Extract in Healthy Adults: A Prospective, Observational Study — Phytotherapy Research : PTR, 2025 doi
- Evaluation of Potential Hormonal Activities of Ashwagandha (Withania Somnifera) — Phytotherapy Research : PTR, 2025 doi
- Dietary Patterns and Testosterone Balance: A Review of Clinical Data and Perspectives — Journal of Advanced Research, 2025 doi
- Testosterone Treatment in Middle-Aged and Older Men with Hypogonadism — The New England Journal of Medicine, 2025 doi
Ver todos (92)
- Semaglutide improved sperm morphology in obese men with type 2 diabetes mellitus and functional hypogonadism — Diabetes, Obesity & Metabolism, 2025 doi
- Effects of Testosterone Deficiency and Therapy on the Cardiometabolic Syndrome in Men — The American Journal of the Medical Sciences, 2025 doi
- The Effect of Chromium Supplementation on Cardio-Metabolic Risk Factors in Overweight and Obese Patients — Journal of Trace Elements in Medicine and Biology : Organ of the Society for Minerals and Trace Elements (GMS), 2025 doi
- Metabolic Effects of Testosterone Added to Intensive Lifestyle Intervention in Older Men With Obesity and Hypogonadism — The Journal of Clinical Endocrinology and Metabolism, 2025 doi
- Efficacy and Safety of Berberine on the Components of Metabolic Syndrome: A Systematic Review and Meta-Analysis of Randomized Placebo-Controlled Trials — Frontiers in Pharmacology, 2025 doi
- Male Hypogonadism: Pathogenesis, Diagnosis, and Management — Diabetes & Endocrinology, 2024 doi
- Dietary Fat Quality and Serum Androgen Concentrations in Middle-Aged Men — European Journal of Clinical Nutrition, 2024 doi
- Do "Testosterone Boosters" Really Increase Serum Total Testosterone? A Systematic Review — International Journal of Impotence Research, 2024 doi
- Testosterone Treatment and Fractures in Men with Hypogonadism — The New England Journal of Medicine, 2024 doi
- Effect of Testosterone Replacement Therapy on Sexual Function and Hypogonadal Symptoms in Men With Hypogonadism — The Journal of Clinical Endocrinology and Metabolism, 2024 doi
- Depressive Syndromes in Men With Hypogonadism in the TRAVERSE Trial: Response to Testosterone-Replacement Therapy — The Journal of Clinical Endocrinology and Metabolism, 2024 doi
- Associations of Testosterone and Related Hormones With All-Cause and Cardiovascular Mortality and Incident Cardiovascular Disease in Men : Individual Participant Data Meta-Analyses — Annals of Internal Medicine, 2024 doi
- Effect of Testosterone on Progression From Prediabetes to Diabetes in Men With Hypogonadism: A Substudy of the TRAVERSE Randomized Clinical Trial — JAMA Internal Medicine, 2024 doi
- Chromium Supplementation and Type 2 Diabetes Mellitus: An Extensive Systematic Review — Environmental Geochemistry and Health, 2024 doi
- The Effect of Berberine Supplementation on Glycemic Control and Inflammatory Biomarkers in Metabolic Disorders: An Umbrella Meta-Analysis of Randomized Controlled Trials — Clinical Therapeutics, 2024 doi
- Intermittent Fasting and Health Outcomes: An Umbrella Review of Systematic Reviews and Meta-Analyses of Randomised Controlled Trials — EClinicalMedicine, 2024 doi
- Effectiveness of Stress Management Interventions to Change Cortisol Levels: A Systematic Review and Meta-Analysis — Psychoneuroendocrinology, 2024 doi
- Effects on Cardiovascular Risk Factors of a Low- Vs High-Glycemic Index Mediterranean Diet in High Cardiometabolic Risk Individuals: The MEDGI-Carb Study — European Journal of Clinical Nutrition, 2024 doi
- Effects of Various Exercise Types on Visceral Adipose Tissue in Individuals With Overweight and Obesity: A Systematic Review and Network Meta-Analysis of 84 Randomized Controlled Trials — Obesity Reviews : An Official Journal of the International Association for the Study of Obesity, 2024 doi
- Prostate Safety Events During Testosterone Replacement Therapy in Men With Hypogonadism: A Randomized Clinical Trial — JAMA Network Open, 2023 doi
- Correlation Between Serum Zinc and Testosterone: A Systematic Review — Journal of Trace Elements in Medicine and Biology : Organ of the Society for Minerals and Trace Elements (GMS), 2023 doi
- Cardiovascular Safety of Testosterone-Replacement Therapy — The New England Journal of Medicine, 2023 doi
- The Effects of Sleep Deprivation and Obstructive Sleep Apnea Syndrome on Male Reproductive Function: A Multi-Arm Randomised Trial — Journal of Sleep Research, 2023 doi
- Exploring the Efficacy and Safety of a Novel Standardized Ashwagandha (Withania Somnifera) Root Extract (Witholytin®) in Adults Experiencing High Stress and Fatigue in a Randomized, Double-Blind, Placebo-Controlled Trial — Journal of Psychopharmacology (Oxford, England), 2023 doi
- Metabolic Syndrome and Erectile Dysfunction: A Systematic Review and Meta-Analysis Study — Journal of Endocrinological Investigation, 2023 doi
- Overall and Sex-Specific Effect of Berberine on Glycemic and Insulin-Related Traits: A Systematic Review and Meta-Analysis of Randomized Controlled Trials — The Journal of Nutrition, 2023 doi
- AASLD Practice Guidance on the Clinical Assessment and Management of Nonalcoholic Fatty Liver Disease — Hepatology (Baltimore, Md.), 2023 doi
- Sleep, testosterone and cortisol balance, and ageing men — Reviews in Endocrine & Metabolic Disorders, 2022 doi
- Aging and Androgens: Physiology and Clinical Implications — Reviews in Endocrine & Metabolic Disorders, 2022 doi
- Effects of Exercise Training on Anabolic and Catabolic Hormones with Advanced Age: A Systematic Review — Sports Medicine (Auckland, N.Z.), 2022 doi
- Nonpharmacological Interventions for the Management of Testosterone and Sperm Parameters: A Scoping Review — Clinical Therapeutics, 2022 doi
- Examining the Effects of Calorie Restriction on Testosterone Concentrations in Men: A Systematic Review and Meta-Analysis — Nutrition Reviews, 2022 doi
- Proposal for Standardizing Normal Insulin Ranges in Brazilian Patients and a New Classification of Metabolic Syndrome — Frontiers in Medicine, 2022 doi
- Effect of Partial and Total Sleep Deprivation on Serum Testosterone in Healthy Males: A Systematic Review and Meta-Analysis — Sleep Medicine, 2021 doi
- Examining the Effects of Herbs on Testosterone Concentrations in Men: A Systematic Review — Advances in Nutrition (Bethesda, Md.), 2021 doi
- Sociodemographic, lifestyle and medical influences on serum testosterone and sex hormone–binding globulin in men from UK Biobank — Clinical Endocrinology, 2021 doi
- Testosterone and Exercise: Effects on Fitness, Body Composition, and Strength in Middle-to-Older Aged Men With Low-Normal Serum Testosterone Levels — Heart and Circulatory Physiology, 2021 doi
- Effects of Mediterranean Diet on Plasma Metabolites and Their Relationship With Insulin Resistance and Gut Microbiota Composition in a Crossover Randomized Clinical Trial — Clinical Nutrition (Edinburgh, Scotland), 2021 doi
- Effects of Dietary Eicosapentaenoic Acid and Docosahexaenoic Acid Supplementation on Metabolic Syndrome: A Systematic Review and Meta-Analysis of Data From 33 Randomized Controlled Trials — Clinical Nutrition (Edinburgh, Scotland), 2021 doi
- Management of Obesity in Cardiovascular Practice: JACC Focus Seminar — Journal of the American College of Cardiology, 2021 doi
- Obesity and Cardiovascular Disease: A Scientific Statement From the American Heart Association — Circulation, 2021 doi
- Optimal Threshold of Homeostasis Model Assessment of Insulin Resistance to Identify Metabolic Syndrome in a Chinese Population Aged 45 Years or Younger — Frontiers in Endocrinology, 2021 doi
- Reviewing the Evidence on Vitamin D Supplementation in the Management of Testosterone Status and Its Effects on Male Reproductive System (Testis and Prostate): Mechanistically Dazzling but Clinically Disappointing — Clinical Therapeutics, 2020 doi
- Age and Time-of-Day Differences in the Hypothalamo-Pituitary-Testicular, and Adrenal, Response to Total Overnight Sleep Deprivation — Sleep, 2020 doi
- The Association Between Popular Diets and Serum Testosterone Among Men in the United States — The Journal of Urology, 2020 doi
- A Randomized Controlled Pilot Trial of Sleep Health Education on Body Composition Changes Following 10 Weeks' Resistance Exercise — The Journal of Sports Medicine and Physical Fitness, 2020 doi
- Omega-3 Fatty Acids for the Primary and Secondary Prevention of Cardiovascular Disease — The Cochrane Database of Systematic Reviews, 2020 doi
- Colon-Delivered Short-Chain Fatty Acids Attenuate the Cortisol Response to Psychosocial Stress in Healthy Men: A Randomized, Placebo-Controlled Trial — Neuropsychopharmacology : Official Publication of the American College of Neuropsychopharmacology, 2020 doi
- Lipid Management in Patients With Endocrine Disorders: An Endocrine Society Clinical Practice Guideline — The Journal of Clinical Endocrinology and Metabolism, 2020 doi
- Causal Link Between Vitamin D and Total Testosterone in Men: A Mendelian Randomization Analysis — The Journal of Clinical Endocrinology and Metabolism, 2019 doi
- A Clinical Perspective of Sleep and Andrological Health: Assessment, Treatment Considerations, and Future Research — The Journal of Clinical Endocrinology and Metabolism, 2019 doi
- Effects of different exercise training programs on body composition: A randomized control trial — Scandinavian Journal of Medicine & Science in Sports, 2019 doi
- Omega-3 Fatty Acids for the Management of Hypertriglyceridemia: A Science Advisory From the American Heart Association — Circulation, 2019 doi
- Associations Between Homeostasis Model Assessment (HOMA) and Routinely Examined Parameters in Individuals With Metabolic Syndrome — Physiological Research, 2019 doi
- Evaluation and Management of Testosterone Deficiency: AUA Guideline — The Journal of Urology, 2018 doi
- Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline — The Journal of Clinical Endocrinology and Metabolism, 2018 doi
- Early Time-Restricted Feeding Improves Insulin Sensitivity, Blood Pressure, and Oxidative Stress Even Without Weight Loss in Men With Prediabetes — Cell Metabolism, 2018 doi
- Hypogonadotropic Hypogonadism in Men With Diabesity — Diabetes Care, 2018 doi
- Effect of Testosterone Treatment on Volumetric Bone Density and Strength in Older Men With Low Testosterone: A Controlled Clinical Trial — JAMA Internal Medicine, 2017 doi
- A Perspective on Middle-Aged and Older Men With Functional Hypogonadism: Focus on Holistic Management — The Journal of Clinical Endocrinology and Metabolism, 2017 doi
- Effect of Magnesium Supplementation on Insulin Resistance in Humans: A Systematic Review — Nutrition (Burbank, Los Angeles County, Calif.), 2017 doi
- Increased Physical Activity Has a Greater Effect Than Reduced Energy Intake on Lifestyle Modification-Induced Increases in Testosterone — Journal of Clinical Biochemistry and Nutrition, 2016 doi
- A Systematic Review and Meta-Analysis of Randomized Controlled Trials on the Effects of Magnesium Supplementation on Insulin Sensitivity and Glucose Control — Pharmacological Research, 2016 doi
- Effect of Magnesium Supplementation on Glucose Metabolism in People With or at Risk of Diabetes: A Systematic Review and Meta-Analysis of Double-Blind Randomized Controlled Trials — European Journal of Clinical Nutrition, 2016 doi
- Hypomagnesemia in Type 2 Diabetes: A Vicious Circle? — Diabetes, 2016 doi
- Physical Activity/Exercise and Diabetes: A Position Statement of the American Diabetes Association — Diabetes Care, 2016 doi
- Vitamin D supplementation and testosterone concentrations in male human subjects — Clinical Endocrinology, 2015 doi
- Metabolic and hormonal effects of ‘catch‐up’ sleep in men with chronic, repetitive, lifestyle‐driven sleep restriction — Clinical Endocrinology, 2015 doi
- Nutrients other than carbohydrates: their effects on glucose homeostasis in humans — Diabetes/Metabolism Research and Reviews, 2015 doi
- Protective Effects of the Mediterranean Diet on Type 2 Diabetes and Metabolic Syndrome — The Journal of Nutrition, 2015 doi
- Resistance Training Restores Muscle Sex Steroid Hormone Steroidogenesis in Older Men — FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology, 2014 doi
- The Interplay between Magnesium and Testosterone in Modulating Physical Function in Men — International Journal of Endocrinology, 2014 doi
- Age-Associated Changes in Hypothalamic-Pituitary-Testicular Function in Middle-Aged and Older Men Are Modified by Weight Change and Lifestyle Factors: Longitudinal Results From the European Male Ageing Study — European Journal of Endocrinology, 2013 doi
- Effects of Magnesium Supplementation on Testosterone Levels of Athletes and Sedentary Subjects at Rest and After Exhaustion — Biological Trace Element Research, 2011 doi
- The Effect of Mediterranean Diet on Metabolic Syndrome and Its Components: A Meta-Analysis of 50 Studies and 534,906 Individuals — Journal of the American College of Cardiology, 2011 doi
- Triglycerides and Cardiovascular Disease: A Scientific Statement From the American Heart Association — Circulation, 2011 doi
- Testosterone Physiology in Resistance Exercise and Training: The Up-Stream Regulatory Elements — Sports Medicine (Auckland, N.Z.), 2010 doi
- Magnesium Effect on Testosterone-SHBG Association Studied by a Novel Molecular Chromatography Approach — Journal of Pharmaceutical and Biomedical Analysis, 2009 doi
- Multiple Biomarkers and Their Relative Contributions to Identifying Metabolic Syndrome — Clinica Chimica Acta; International Journal of Clinical Chemistry, 2009 doi
- Insulin Resistance, the Metabolic Syndrome, and Risk of Incident Cardiovascular Disease: A Population-Based Study — Journal of the American College of Cardiology, 2007 doi
La solidez de esta evidencia varía: hay grandes revisiones y metaanálisis, y también estudios pequeños aislados. Los pasos del artículo son medidas sencillas de autocuidado de bajo riesgo, no un tratamiento, y pueden no servir para todos.
Esto es información general, no una prescripción. Las pruebas y el tratamiento los decide un médico.