Can probiotics improve your health in later life?
Clinical studies into probiotics and ageing are ongoing, but results are not yet available. At this point there is too little evidence to say whether they improve your health in later life.
Probiotics appear on a list of eight promising agents being investigated in clinical studies into ageing and age-related diseases. That sounds encouraging, but it only means the research is under way, not that results are already available.
The one available source names probiotics by name as a candidate, but provides no figures, no mechanism of action and no safety data. Whether the agent actually helps cannot be determined at this point on the basis of this evidence.
In practical terms: if you want to know which probiotics are useful for which condition and at which dose, this evidence cannot answer that question. For that, the results of the ongoing trials are needed.