Lactose intolerant people have a deficiency of an enzyme called lactase, which breaks up the lactose into two monosaccharides called galactose and glucose. These two are easily digestable, whereas lactose is not.
The enzyme that acts on lactose is called lactase. Lactase breaks down lactose into its component sugars, glucose and galactose, which can then be absorbed by the body. People who are lactose intolerant have low levels of lactase, leading to difficulty digesting lactose.
Firstly, I think you phrased this question wrong because lactose is a substrate. It is the job of lactase (and enzyme) to break down lactose. Some people are lactose intolerant because their bodies do not have enough lactase enzymes to break down lactose.
Are you talking about lactose intolerance? If so, people are lactose intolerant because they do not have the enzyme lactase that is use to digest the lactose. The gene that codes for the lactase cease to be express when they get older . Other people keep expressing the gene for their entire life.
When someone is lactose intolerant it means they don't produce any/enough lactase enzyme in the small intestine. Without the enzyme, lactase the lactose is not broken down and doesn't go into the bloodstream, it stays in the small intestine where bacteria respires, to try and break it down. The presence of undigested lactose increases water potential and therefore leads to diarrhoea.
Lactose intolerance is a misnomer. Many people are unaware of what it actually is and means. Almost everyone on the planet is lactose intolerant, it's just to what degree. The majority of adult humans don't produce the lactase enzyme needed to break down lactose. More correctly it's to what degree are you intolerant. Generally speaking, yes you could be half lactose intolerant.
All mammals, including humans, are fed milk, by their mothers, when they are infants. all infants bodies produce an enzyme called lactase, that digests lactose, the kind of sugar found in milk. As they grow, animals and many people stop producing lactase and can no longer digest milk. they become lactose intolerant. people whose ancestors came from areas where dairy foods have long been part of the diet, such as northern and western Europe, are less likely to become lactose intolerant.
As long as a person has the lactase enzyme, then yes. Otherwise, it gets passed through the body as a sugar that cannot be broken down (typically causing gastrointestinal distress if consumed in large quantities).
Lactose is removed from milk through a process called lactose hydrolysis, where the enzyme lactase is added to break down the lactose into its simpler forms, glucose and galactose. This process is commonly used in the production of lactose-free milk for people who are lactose intolerant.
Yes. My partner became lactose intolerant in his late 20s.
Lactaid milk is made by adding the enzyme lactase to regular milk, which helps break down lactose, the sugar found in milk. This makes it easier for people who are lactose intolerant to digest. Regular milk contains lactose, which can cause digestive issues for some people who lack enough lactase enzyme.
Lactose intolerant people have lactase deficiency, which is an enzyme, so they should reduce the consumption of lactose containing food products like milk etc., however they can take foods prepared from milk like curd as lactose is converted to lactic acid,paneer cheese etc
the enzyme, lactase