Homeopaths recognise the effects of ancestors’ traumas and their acute infectious diseases in later generations.
As the above article says:
The idea is controversial, as scientific convention states that genes contained in DNA are the only way to transmit biological information between generations. However, our genes are modified by the environment all the time, through chemical tags that attach themselves to our DNA, switching genes on and off. Recent studies suggest that some of these tags might somehow be passed through generations, meaning our environment could have an impact on our children’s health.