Protein at every meal: why you need more after 40

3 min read

Coffee in the morning, something on the run during the day, a big dinner in the evening. That's how a great many men eat. And there's almost no protein in this pattern until the evening. After 40 this shows noticeably in muscles, energy and the belly.

Why it works

Muscle has become more "demanding". With age it responds less well to protein, so to keep it you need more protein than before — and spread evenly through the day, not all at dinner.

Protein holds on to muscle during weight loss. When the waistline shrinks, it matters that fat goes, not muscle. Protein and strength training are exactly what take care of that.

Protein keeps you full. Protein-rich food keeps you satisfied for a long time. Ultra-processed snacks, which are low in protein, push you to overeat by themselves.

How to do it

A source of protein at every meal. A guide — 30–40 g of protein per meal.
Start with breakfast: that's usually where protein is lowest.
Per day — 1.2–1.6 g of protein per kilogram of body weight.

What 30–40 g of protein looks like in practice — roughly:

breakfast: a 3-egg omelette with cottage cheese, or Greek yogurt with nuts;
lunch: a palm-sized portion of fish, chicken or meat;
dinner: lentils or beans with cheese, tofu, seafood.

Protein powder is a handy back-up if you can't get enough from food.

Who should be more careful

With kidney disease, always agree the amount of protein with your doctor.
If you have had difficulties with food — an eating disorder now or in the past — rules about food are better discussed with a specialist than introduced on your own.

What can get in the way

"I can't eat in the morning". Start small: yogurt, a couple of eggs, a glass of kefir.
"No time to cook". Boiled eggs, cottage cheese, tinned fish, ready-cooked lentils — no cooking needed.

What to expect

Watch how fullness between meals and strength in workouts change. Log how you feel in VIA-L. Works well paired with strength training.

What this is based on

This article is based on topics from the VIA-L knowledge base. These are the published studies behind them:

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

Show all (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

The strength of this evidence varies: some are large reviews and meta-analyses, some are small single studies. The steps in the article are simple, low-risk self-care measures, not treatment, and they may not suit everyone.

This is general information, not a prescription.