Renowned Harvard University geneticist David Sinclair recently made a startling assertion: Scientific data shows he has knocked more than two decades off his biological age.What’s the 49-year-old’s secret? He says his daily regimen includes ingesting a molecule his own research found improved the health and lengthened the life span of mice. Sinclair now boasts online that he has the lung capacity, cholesterol and blood pressure of a “young adult” and the “heart rate of an athlete.”Despite his enthusiasm, published scientific research has not yet demonstrated the molecule works in humans as it does in mice. Sinclair, however, has a considerable financial stake in his claims being proven correct, and has lent his scientific prowess to commercializing possible life extension products such as molecules known as “NAD boosters.”His financial interests include being listed as an inventor on a patent licensed to Elysium Health, a supplement company that sells a NAD booster in pills for $60 a bottle. He’s also an investor in InsideTracker, the company that he says measured his age.Discerning hype from reality in the longevity field has become tougher than ever as reputable scientists such as Sinclair and pre-eminent institutions like Harvard align themselves with promising but unproven interventions…