Tech millionaire Bryan Johnson, who's spending around ₹16 crore/year to get an 18-year-old's body, revealed that his face blew up after he injected a donor's fat-derived extracellular matrix to restore his facial fat. He said the allergic reaction got so worse, he couldn't even see. Bryan added he lost facial fat as he reduced caloric consumption from 2,500 to 1,950/day.