To date, investors do not really want to invest in projects with medical topics. They want to quickly return the money and not wait for many years.
Analyze the projects themselves, which were in medicine 
 https://www.trackico.io/closed/?category=health-medicine
 https://icobench.com/icos?filterBonus=&filterBounty=&filterMvp=&filterKyc=&filterExpert=&filterSort=&filterCategory=health&filterRating=any&filterStatus=ended&filterPublished=&filterCountry=any&filterRegistration=0&filterExcludeArea=none&filterPlatform=any&filterCurrency=any&filterTrading=any&s=&filterStartAfter=&filterEndBefore=