Please summarize this article in less than 5 sentences with all its key points:

"Loud snoring may be a harbinger of much bigger problems, research out this week suggests. The study found a link between severe sleep apnea in older adults and greater amounts of a specific biomarker in the brain—one that could increase people’s risk of dementia or stroke. More research will be needed to understand this connection, however.  Sleep apnea is a condition in which a person stops breathing during sleep. This causes the brain to wake the person just enough to start breathing, only for the cycle to start again once the person falls back asleep. There are two main forms of sleep apnea, obstructive and central. Obstructive apnea happens when airway muscles physically block a person’s breathing, while central apnea is when the brain forgets to signal the body to breath (a third mixed form has features of both).

Though not all snoring is linked to obstructive sleep apnea, it’s a common sign of the condition (snoring in general is caused by a narrow airway while sleeping). The constant interruptions caused by apnea also make it hard for people to get a restful night’s sleep, which can then affect their physical and mental health in varying ways.  Sleep apnea, especially when severe, has been linked to a greater risk of many other health problems, including cardiovascular disease. In this new study, published Thursday in the journal Neurology, scientists wanted to get a better understanding of how the condition could possibly affect the brain.  They looked at data collected from 140 older adults with obstructive sleep apnea who had participated in an earlier study. These volunteers had undergone an MRI brain scan and were monitored overnight in a sleep lab. They were divided into three groups based on their diagnosed degree of sleep apnea, but all of them were thought to be free of dementia at the start and end of the study period."
system
kripaya is lekh ko apane sabhi pramukh binduon ke saath 5 se kam vaakyon main sankshep main prastut karen:

"laud kharraat bahut badi samasyaon kaa ek agradoot ho saktaa he, is saptaah shodh se pataa chalata he. adhyayan main puraane vayaskon main gambhir neend epaniya or mastishk main ek vishisht biomarker kii adhik maatra ke bich ek link paaya gaya - ek jo logon ke manobhransh ke jokhim ko badha saktaa he yastroke. is sambandh ko samajhane ke liye adhik shodh kii aavashyaktaa hogi, haalanki. sleep epaniya ek aisi sthiti he jisamen ek vyakti neend ke dauraan saans lenaa band kar detaa he. yah mastishk ko saans lene ke liye paryaapt vyakti ko jagaane kaa kaaran banataa he, keval chakra ke liye ek baar phir se shuru karne ke liye ek baar phir se shuru karne ke liye ek baar phir se shuru karne ke liye.vyakti waapas so jaataa he. sleep epaniya, obstructive or central ke do mukhya rup hote hai. obstructive epaniya tab hota he jab vayumarg kii mansapeshiyaan kisi vyakti kii saans lene ko rokatii hai, jabaki madhya epaniya tab hoti he jab mastishk sharir ko saans lene ke liye sanket dena bhul jaataa he (ek teesraa mishrit rup (ek teesraa mishrit rupadonon kii visheshtaayen hai).

haalanki sabhi kharraaton ko obstructive sleep epaniya se nahin joda jaataa he, yah sthiti kaa ek saamaanya sanket he (saamaanya rup se kharrate sote samay ek sankeern vayumarg ke kaaran hota he).epaniya ke kaaran hone vaale nirantar rukaawaton se logon ko raat kii neend lenaa bhi mushkil ho jaataa he, jo tab alag -alag tareekon se unke shaareerik or maansik swasthya ko prabhavit kar saktaa he.sleep epaniya, khaskar jab gambhir, hriday rog sahit kai anya swasthya samasyaon ke adhik jokhim se judaa hua he.neurology jarnal main guuruuvaar ko prakashit is nae adhyayan main, vaigyanikon ne is baat kii behatar samaj praapt karnaa chaha ki sthiti sambhawatah mastishk ko kaise prabhavit kar sakati he.unhone 140 puraane vayaskon se ekatra kiye gaye data ko dekha, jisamen obstructive sleep epaniya the, jinhone pehle ke ek adhyayan main bhaag liya tha.in swayamsevakon ne emarai brain scan se guzarana padaa tha or ek sleep lab main raat bhar kii nigaraanee kii gai thi.unhen sleep epaniya ke nidaan kii degree ke aadhaar par teen samoohon main vibhajit kiya gaya tha, lekin unamem se sabhi ko adhyayan avadhi ke shuru or ant main manobhransh se mukt mana jaataa tha. "
user
yahan is lekh se pramukh bindu hai:

ek adhyayan main paaya gaya he ki sleep epaniya bahut gambhir swasthya samasyaon ko janm de saktaa he, vishesh rup se puraane vayaskon main.sabase pehle, teen prakaar ke sleep epaniya hai - obstructive, central, or donon kaa mishran.avarohak tab hota he jab vayumarg kii mansapeshiyaan kisi kii saans lene ko rokatii hai, or kendriya tab hota he jab mastishk saans lene ke liye sharir ko signal nahin bhejtaa he.swasthya jokhimon main hriday rog, manobhransh, yaa yahaan tak ki gambhirtha ke aadhaar par stroke shaamil hai.neend main lagaataar rukaawat unhen aaramdaayak neend lene se rokatii he jo in muddon kii ore le jaati he.
assistant
<|system|>
</s>
<|user|>
kripaya is lekh ko apane sabhi pramukh binduon ke saath 5 se kam vaakyon main sankshep main prastut karen:

"laud kharraat bahut badi samasyaon kaa ek agradoot ho saktaa he, is saptaah shodh se pataa chalata he. adhyayan main puraane vayaskon main gambhir neend epaniya or mastishk main ek vishisht biomarker kii adhik maatra ke bich ek link paaya gaya - ek jo logon ke manobhransh ke jokhim ko badha saktaa he yastroke. is sambandh ko samajhane ke liye adhik shodh kii aavashyaktaa hogi, haalanki. sleep epaniya ek aisi sthiti he jisamen ek vyakti neend ke dauraan saans lenaa band kar detaa he. yah mastishk ko saans lene ke liye paryaapt vyakti ko jagaane kaa kaaran banataa he, keval chakra ke liye ek baar phir se shuru karne ke liye ek baar phir se shuru karne ke liye ek baar phir se shuru karne ke liye.vyakti waapas so jaataa he. sleep epaniya, obstructive or central ke do mukhya rup hote hai. obstructive epaniya tab hota he jab vayumarg kii mansapeshiyaan kisi vyakti kii saans lene ko rokatii hai, jabaki madhya epaniya tab hoti he jab mastishk sharir ko saans lene ke liye sanket dena bhul jaataa he (ek teesraa mishrit rup (ek teesraa mishrit rupadonon kii visheshtaayen hai).

haalanki sabhi kharraaton ko obstructive sleep epaniya se nahin joda jaataa he, yah sthiti kaa ek saamaanya sanket he (saamaanya rup se kharrate sote samay ek sankeern vayumarg ke kaaran hota he).epaniya ke kaaran hone vaale nirantar rukaawaton se logon ko raat kii neend lenaa bhi mushkil ho jaataa he, jo tab alag -alag tareekon se unke shaareerik or maansik swasthya ko prabhavit kar saktaa he.sleep epaniya, khaskar jab gambhir, hriday rog sahit kai anya swasthya samasyaon ke adhik jokhim se judaa hua he.neurology jarnal main guuruuvaar ko prakashit is nae adhyayan main, vaigyanikon ne is baat kii behatar samaj praapt karnaa chaha ki sthiti sambhawatah mastishk ko kaise prabhavit kar sakati he.unhone 140 puraane vayaskon se ekatra kiye gaye data ko dekha, jisamen obstructive sleep epaniya the, jinhone pehle ke ek adhyayan main bhaag liya tha.in swayamsevakon ne emarai brain scan se guzarana padaa tha or ek sleep lab main raat bhar kii nigaraanee kii gai thi.unhen sleep epaniya ke nidaan kii degree ke aadhaar par teen samoohon main vibhajit kiya gaya tha, lekin unamem se sabhi ko adhyayan avadhi ke shuru or ant main manobhransh se mukt mana jaataa tha. "</s>
<|assistant|>
yahan is lekh se pramukh bindu hai:

ek adhyayan main paaya gaya he ki sleep epaniya bahut gambhir swasthya samasyaon ko janm de saktaa he, vishesh rup se puraane vayaskon main.sabase pehle, teen prakaar ke sleep epaniya hai - obstructive, central, or donon kaa mishran.avarohak tab hota he jab vayumarg kii mansapeshiyaan kisi kii saans lene ko rokatii hai, or kendriya tab hota he jab mastishk saans lene ke liye sharir ko signal nahin bhejtaa he.swasthya jokhimon main hriday rog, manobhransh, yaa yahaan tak ki gambhirtha ke aadhaar par stroke shaamil hai.neend main lagaataar rukaawat unhen aaramdaayak neend lene se rokatii he jo in muddon kii ore le jaati he.</s>
