Browse evidence-based analysis of health-related claims and assertions
Log in to see full claim details, scientific mechanisms, and cited studies.
Eating 20 to 40 grams of protein before bed might help your muscles repair and grow overnight, especially if you also worked out in the evening.
If you work out in the evening, your body uses much more of the protein you eat before bed to build muscle overnight than if you didn’t exercise.
Eating protein before bed won’t mess with your hunger or slow down your metabolism the next morning — so it’s safe to add to your daily routine if you're a healthy or overweight young guy.
Older adults might need to eat about 40 grams of protein before bed to help their muscles repair and grow overnight, because 20 grams isn’t enough as their bodies become less responsive to smaller...
If young guys who work out lift weights regularly, having a snack with about 30 grams of protein before bed might help them build more muscle and get stronger — especially if they don’t already eat a...
Eating 20 to 40 grams of protein before bed helps your muscles repair and grow overnight, especially if you worked out in the evening.
If young, active guys drink a shake with 20g of milk, whey, or casein protein plus 45g of carbs after a mixed workout, all three proteins help turn on muscle-building signals just as well—even though...
If young, active guys work out and then drink a shake with carbs and protein, it doesn’t help their muscles repair energy factories any better than just drinking carbs alone—within the first 6 hours...
For young guys who work out regularly, drinking milk, whey, or casein after a mixed workout doesn’t make a difference in how their muscles rebuild energy parts in the first 6 hours — as long as they...
If young guys who work out drink a mix of 20 grams of any milk-based protein and 45 grams of carbs after a workout, their muscles repair themselves about 16% better over the next 6 hours compared to...
For young guys who work out regularly, drinking a shake with 20g of any kind of milk protein (like whey or casein) plus 45g of carbs after a combo of strength and cardio exercise helps build muscle...
Turning on a specific cell receptor called TGR5 with a special compound makes mouse muscle cells grow bigger by switching on growth-related genes and signals — which might one day help treat muscle...
Giving BCAA supplements to rats with liver disease might help them keep more muscle, and it’s linked to changes in certain bile acids in their blood.
In lab-grown mouse muscle cells, a substance called lithocholic acid makes the muscle cells grow bigger, especially at a specific dose, and this happens through a particular chain reaction in the...
Higher levels of a substance called lithocholic acid in the blood might mean better survival for people with chronic liver disease — one study found that patients with levels above 0.32 had better...
In people with long-term liver disease, having more of a certain gut-related acid in the blood might be linked to having more leg muscle strength — and this acid could help doctors spot muscle loss...
Eating protein before bed after a long workout can boost your body's muscle repair process overnight by 30%.
If young, healthy guys drink a casein protein shake before bed after a long workout, their muscles build more overnight — both in the energy parts of cells and the actual muscle fibers.
If young, healthy guys drink a whey protein shake before bed after a long workout, their muscles build more overnight — both the tiny energy factories and the actual muscle fibers get a boost.
If young, healthy guys drink a protein shake before bed after working out, it doesn’t matter if it’s whey or casein—both help their muscles recover just the same overnight.
If young, healthy guys eat 45 grams of protein before bed after a workout, their muscles build more repair and energy-related proteins overnight compared to not eating protein.
If you eat the same amount of protein and lift weights the same way, it doesn’t matter whether your protein is fast- or slow-digesting—even if it’s from plants like soy—your muscle gains will be...
If older guys work out in the evening and then eat protein before bed, their muscles use that protein better overnight to repair and grow.
It's not just how fast amino acids show up in your blood after eating — it's how much your body gets over time that might matter more for building muscle.