Browse the evidence

Older women may exhibit elevated fasted muscle protein synthesis (MPS) rates compared to younger women or age-matched men, but their MPS response to anabolic stimuli like resistance exercise or protein ingestion may be blunted.

As you age, your muscles may not respond as strongly to exercise and protein as they did when you were younger. This doesn't mean exercise is useless, but it does mean you may need to be more consistent and potentially adjust your protein intake to maximize muscle protein synthesis.

In 60–65-year-old women, skeletal muscle mass is independently predicted by protein intake per kilogram of body weight, whereas in men of the same age, muscle mass is associated with protein intake and hard leisure-time physical activity, but not other dietary factors.

For seniors aged 60-65, maintaining muscle mass requires sex-specific strategies. Women should focus on adequate protein intake per kg of body weight combined with moderate health-related physical activity, as other nutrients like magnesium and phosphorus also play a role. Men should prioritize total protein intake and engage in harder, vigorous leisure-time physical activity, as other dietary factors do not significantly predict muscle mass in this group.

Vegetarian diets may enhance endurance performance (VO2 max and time to exhaustion) compared to omnivorous diets, likely due to higher carbohydrate availability.

If your primary goal is endurance, a vegan or vegetarian diet may offer a slight advantage in VO2 max and time to exhaustion compared to an omnivorous diet, potentially due to higher carbohydrate intake.

High protein intake (>236 g/day or >3.30 g/kg/day) combined with long-term supplementation (>1 year) significantly decreases glomerular filtration rate (GFR) and increases serum creatinine in CrossFit athletes compared to adequate intake without supplementation.

If you are a CrossFit athlete consuming more than 3.30 g of protein per kg of body weight daily, especially using supplements for over a year, monitor your kidney function (GFR and creatinine) regularly. High doses over long periods may reduce kidney filtration efficiency, even in healthy athletes.

Training to concentric muscle failure provides greater hypertrophy benefits than non-failure training only when using low-load resistance training; in high-load training, volume-equated failure training offers no significant hypertrophy advantage over non-failure training.

If you are lifting heavy weights (high intensity), you do not need to train to failure to maximize muscle growth; stopping a few reps short is likely equivalent if total volume is matched. However, if you are lifting lighter weights (low intensity), training to failure is likely necessary to stimulate growth comparable to heavy lifting. Adjust your proximity to failure based on your load.

Support Vector Regression (SVR) machine learning models can accurately predict weight loss, fasting blood glucose, and HbA1c outcomes in Type 2 diabetic patients treated with Exenatide, enabling optimized nursing care and treatment decisions.

For nurses managing diabetic patients on Exenatide, using validated machine learning models (specifically SVR) can significantly improve the accuracy of predicting weight loss and glycemic control (HbA1c/Fasting Glucose). This allows for proactive adjustments to nursing care plans, dietary advice, and lifestyle interventions before complications arise, rather than reacting to poor outcomes after they occur.

Regular meal patterns and larger, less frequent meals maximize the Thermic Effect of Food (TEF) compared to irregular or frequent small meals.

Try eating fewer, larger meals rather than grazing throughout the day. Regular, larger meals may trigger a higher thermic effect of food (more calories burned during digestion) and help manage hunger signals better than frequent small snacks.

Garcinia cambogia (Hydroxycitric acid/HCA) supplementation reduces visceral fat and improves fasting blood glucose and insulin sensitivity in overweight/obese individuals.

Garcinia cambogia (HCA) at 1,000 mg/day may help reduce visceral fat and improve blood sugar in overweight people, but it is not a magic bullet. It works by blocking fat synthesis and suppressing appetite.

Coleus forskohlii (Forskolin) supplementation reduces body fat, increases lean mass, and improves insulin sensitivity in overweight/obese men.

Coleus forskohlii (Forskolin) taken daily for 12 weeks may help reduce body fat and increase lean mass in overweight men, improving insulin sensitivity. It works by increasing cAMP, which stimulates fat breakdown.

Banaba leaf extract (Corosolic acid) and Resistant Maltodextrin (RMD) improve blood glucose control and insulin sensitivity through distinct mechanisms.

Banaba leaf extract and Resistant Maltodextrin (RMD) can improve blood glucose control and insulin sensitivity. Banaba works by promoting glucose uptake, while RMD delays carbohydrate absorption and increases SCFA production.

Carriers of the TCF7L2 rs7903146 T allele exhibit significantly attenuated weight loss and metabolic improvements compared to non-T allele (CC) carriers when following a partial meal replacement (pMR) hypocaloric diet.

If you have the TCF7L2 rs7903146 T allele, expect your weight loss to be roughly half as fast as someone with the CC genotype on a similar meal-replacement diet. Focus on metabolic health markers (blood sugar, insulin) as early wins, as these improve significantly even if the scale moves slower.

Both Low-Carbohydrate and Low-Fat diets can cause negative side effects, including gastrointestinal issues, fatigue, and in the case of LCD, potential risks like ketosis and kidney failure.

Be prepared for side effects when starting either diet. LCD may cause ketosis, fatigue, or kidney stress, while LFD may cause constipation and fatigue. Monitor your health and consult a physician, especially if you have pre-existing conditions.

A low-carbohydrate diet (20-30% carbohydrates) produces significantly greater short-term weight loss (1 month) compared to balanced dietary guidance or pharmacotherapy (semaglutide/metformin) in individuals with overweight or obesity, but this advantage disappears by 3 months.

If you choose a low-carb diet, expect faster results in the first month, but do not assume it will keep working better than other diets after 3 months. The initial advantage likely comes from reduced calorie intake due to diet simplicity, not magic. For long-term success, focus on adherence and sustainable habits rather than just macronutrient ratios.

Pharmacotherapy with semaglutide (1 mg/week) and/or metformin (0.5g 3x/day) combined with lifestyle interventions produces weight loss comparable to low-carbohydrate diets and balanced diets at 3 months, despite potentially faster initial results.

Pharmacotherapy (semaglutide/metformin) combined with lifestyle changes is an effective weight loss strategy that yields similar results to dietary changes after 3 months. It is not just for 'severe' cases but can be a valid option for those struggling with diet alone.

A digital weight loss program augmented with a human-enhanced kick-off session yields significantly greater 3-month weight loss (-4.06%) compared to a fully automated program (-4.57%), though the difference was not statistically significant in this pilot.

If you are motivated and can lose weight quickly (2% in a month) using an app, you might not need extra human coaching. If you struggle, a brief check-in or more intensive counseling can help. The app itself is the core driver.

Replacing carbohydrates with saturated fatty acids (SFA) increases the prevalence of dyslipidemia, specifically elevated total cholesterol and LDL-C, in Filipino women.

For Filipino women, swapping carbohydrates for saturated fats (like those in coconut oil or animal fats common in their diet) raises the risk of high cholesterol and LDL. To improve lipid profiles, prioritize unsaturated fats (MUFA/PUFA) or complex carbohydrates instead of saturated fats when adjusting macronutrient ratios.

Replacing carbohydrates with Monounsaturated Fats (MUFA) is associated with a reduced prevalence of dyslipidemia in Filipino women.

For Filipino women, swapping carbohydrates for Monounsaturated Fats (found in olive oil, avocados, nuts) lowers the risk of dyslipidemia. This suggests that increasing MUFA intake is a beneficial dietary strategy for improving lipid profiles.

Higher daily plain water intake is associated with a significantly lower risk of all-cause, cerebrovascular, and cancer mortality in patients with NAFLD or MASLD, with a non-linear dose-response relationship.

If you have fatty liver disease (NAFLD/MASLD), aim to increase your daily plain water intake. The study suggests that consuming around 2.8 liters (approx. 95 oz) of plain water per day is associated with a significantly lower risk of death from all causes, heart issues, and cancer compared to drinking less than 0.15 liters. If you currently drink sugary or artificial beverages, try replacing them with plain water; even small swaps (100mL) can reduce mortality risk. Always consult your doctor before making major changes, especially if you have fluid restrictions.

For upper limb exercises, High-Load Resistance Training (HL-RT) produces significantly greater muscle hypertrophy than Low-Load Resistance Training with Blood Flow Restriction (LL-RT with BFR).

When training upper body muscles (arms, shoulders), heavy lifting (HL-RT) may be slightly more effective for muscle growth than BFR training. However, BFR is still a viable option, especially if heavy lifting is not possible.

Training to failure in single-set resistance training may modestly enhance some measures of muscle hypertrophy and power (countermovement jump) compared to training with 2 RIR, but does not improve strength or endurance.

If your primary goal is maximum muscle size and you can tolerate the discomfort, training to failure might offer a slight edge over stopping with 2 reps in reserve. However, this comes at the cost of higher discomfort and potential adherence issues. For strength, the benefit is non-existent. Choose based on your ability to recover and stick with the program.

Animal-based proteins provide a modest but statistically significant advantage in stimulating muscle protein synthesis (MPS) compared to plant-based proteins, primarily driven by higher leucine content and bioavailability.

If you are over 65, prioritize animal proteins (whey, milk, eggs) or ensure your plant protein is high-leucine (soy, pea blends) to maximize muscle growth. For younger adults, plant and animal proteins appear functionally equivalent for MPS when doses are matched.

The MPS advantage of animal proteins over plant proteins is significantly more pronounced in older adults (65+) than in younger adults, likely due to the 'leucine threshold'.

If you are over 65, ensure your plant proteins are high-leucine (e.g., soy, pea) or consider animal proteins to overcome age-related anabolic resistance. Younger adults can likely use either source effectively.

Females perceive supervision during resistance training as more important than males, particularly regarding technical coaching and safety.

Female trainees may benefit more from seeking supervision than male trainees, as they perceive it as more important for technical learning and safety. Trainers should ensure they provide adequate technical coaching and safety oversight for female clients.

Training the medial gastrocnemius with initial partial repetitions (lengthened position) produces greater hypertrophy than training with past-failure partials (full ROM followed by lengthened partials), although the evidence is currently anecdotal.

If you want to maximize calf growth, prioritize initial partials (stretching the calf at the bottom of the movement) over past-failure partials. Perform full-range calf raises to failure, then immediately drop the heel to stretch the calf and perform partial reps. However, ensure you are eating enough protein (1.6g/kg) and training consistently twice a week. The difference between strategies is small, so consistency with full-range or initial partials is more important than perfect technique.