Question 1

Does protein powder absorb faster than whole food?

Accepted Answer

Yes. Whey protein isolate absorbs at approximately 8-10g per hour. Hydrolyzed whey absorbs even faster because the protein chains are already partially broken down [16]. Whole foods like steak or chicken absorb more slowly, at roughly 3-6g per hour. Faster absorption can be advantageous around workouts when rapid amino acid delivery matters.

Question 2

How do I know if I'm not absorbing protein well?

Accepted Answer

Common signs include persistent gas and bloating after protein meals, brittle nails, hair loss or thinning, unexplained fatigue, slow recovery from workouts, and undigested food visible in stool. If multiple symptoms persist, consider testing for hypochlorhydria or working with a gastroenterologist.

Question 3

Does age affect protein absorption?

Accepted Answer

Yes. Older adults experience what researchers call "anabolic resistance." Muscle tissue becomes less responsive to the anabolic signal from amino acids [17]. The PROT-AGE study group recommends 1.0-1.2g of protein per kilogram of body weight daily for older adults, with higher intakes of 1.2-1.5g/kg for those with acute or chronic illness [18]. Seniors fighting sarcopenia (age-related muscle loss) should prioritize leucine-rich protein sources and may benefit from higher per-meal protein doses to overcome anabolic resistance.

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