The more protein you eat, the better! Study reveals that eating less may delay aging. The key is to look at 1 habit

Regular exercise and protein intake are both related to muscle maintenance. Research points out that protein intake may need to take into account personal activity levels, and people who sit for long periods of time may not necessarily need to supplement a large amount of additional protein; situational photo. (Picture taken from Freepik)

[Compiled by Chen Chengliang/Comprehensive Report] Is eating more protein healthier? An analysis that reviewed more than 350 studies found that reducing protein intake may help improve metabolism, delay aging, and even extend lifespan in animal experiments. Researchers pointed out that protein intake may be related to the amount of activity, and people who usually sit for a long time may not necessarily need to supplement a large amount of additional protein.

The science news website "ScienceDaily" reported on the 10th that this study was conducted by researchers at the University of Wisconsin-Madison, and the results were published in the journal "Cell Press Blue". The research team pointed out that protein helps muscle growth and recovery after exercise, but people with low activity levels may consume more than their bodies need.

A review of research found that restricting protein intake has been associated with increased lifespan in experiments on fruit flies and rodents, and that similar effects may occur even without reducing total calories. Human studies have found that in some clinical trials, people who reduced protein intake improved their weight, body fat, and fasting blood sugar. However, it has not yet been proven that eating less protein can extend human lifespan.

Research reveals aging-related hormones and amino acids

Researchers have also sorted out the physiological mechanisms that may be involved, including fibroblast growth factor 21 (FGF21). This hormone increases when protein intake is limited and is involved in energy metabolism and blood sugar regulation. Animal studies have found that mice with higher FGF21 live longer, but whether the same effect exists in humans remains to be confirmed.

In addition, the research paid special attention to three amino acids: methionine, isoleucine and valine. They are not only raw materials for protein synthesis, but also participate in regulating cell growth and metabolism. A review of research suggests that restricting certain amino acids may provide similar health benefits as reducing protein intake.

However, eating less protein is not always better. The elderly need enough protein to maintain muscle and body functions, and pregnant women and people who exercise regularly may also need more protein. If the elderly do not have enough protein, they may also increase the risk of muscle loss and reduced mobility.

Researchers believe that protein intake recommendations should not only look at age, but also consider activity level. For people who sit for a long time and do little exercise, supplementing with a large amount of protein may not bring more benefits; people who exercise a lot and need to maintain muscles still need enough protein.

Research reminds that protein intake needs to take into account individual needs, and health standards cannot be based solely on "eat more" or "eat less".