There are more good people involved in longevity research than bad. Anon spent a couple years researching the topic and knows many of the scientists involved.
we've been focused on plasma and blood here lately, which is reasonable enough, blood/plasma is a fantastic liquid network which contains protein signals which control the harmonious function of every organ system in the body,
Scientists have traditionally studied diseases separately because they have separate pathologies. Heart disease mostly comes from accumulated fat deposits clogging arteries, cancers from DNA damage, Alzheimer’s and other dementias from damaged brain cells, etc.—and each disease has multiple contributing factors. But they share a common feature: Aging drives them all. If we delay aging and rejuvenate organs, tissues, and cells, we can prevent or remediate them all.
There are a multitude of viable approaches.
Synthesizing "pro life" proteins in our blood and removing "pro aging" blood fractions is one viable method. There is no need to drain children of plasma .
https://joshmitteldorf.scienceblog.com/
https://www.tabletmag.com/jewish-news-and-politics/201752/beyond-120
The reason to extend lifespan is not selfish.
Alzheimer’s disease is the best-known degenerative brain disease of old age. For people at age 65, according to the Centers for Disease Control and Prevention, the risk of developing the disease begins to double every five years. By age 85 years and older, between 25 percent and 50 percent of people will exhibit signs of Alzheimer’s disease. Most of us will live four-eight years after diagnosis; some of us for 20 years or more. About 40 percent of our lives after Alzheimer’s diagnosis will be spent in the most severe stage of the disease. So hideous is the affliction and so ineffective are existing treatments that physicians debate whether it is acceptable to keep a diagnosis from the patient.
Brock Reeve, director of the Harvard Stem Cell Institute, says, “Alzheimer’s is a ticking time bomb for society. It’s going to totally shoot the healthcare economics of this country.” In 2015, America’s total payments for healthcare, long-term care, and hospice for people with Alzheimer’s and other age-related dementia are estimated to be $226 billion. Medicare: $113 billion; Medicaid is $41 billion; insurance deductibles and out-of-pocket payments: $44 billion; and $29 billion “other,” meaning payment sources including private insurance, health maintenance organizations, managed-care groups, and uncompensated care. When what health care professionals call “the silver tsunami” hits, healthcare costs will increase astronomically. By 2050, 88.5 million Americans will be over 65, and estimated costs for Alzheimer’s care alone will run from $1 trillion and upwards.