The phrase "a healthy effect" is correct and usable in written English.
It can be used when discussing the positive impact or benefits of something on health or well-being.
Example: "Regular exercise has a healthy effect on both physical and mental health."
Alternatives: "a beneficial impact" or "a positive influence".
The previous reforms — and the memory of 2008 — have had a healthy effect.
Mr Posner, it could be claimed, was having a healthy effect on the market.
The move seems smart for both institutions and is bound to have a healthy effect on the neighborhood, which has begun to attract young artists and new galleries.
In terms of banking, it has plainly had a healthy effect: banks have strengthened their risk-management systems and spread their risks—so much so that many should be able to hold less capital against their loans.
That night, 12 hours short of my deadline, I decide to pack in the not complaining project, having already gathered sufficient evidence to know that it is not having a healthy effect.
His team presented a paper at a medical conference, the Scientific Sessions of the American Heart Association, in New Orleans, Louisiana, last November showing for the first time that the emotions aroused by "joyful music" have a healthy effect on blood vessels.
A less healthy effect of political sensitivity is that funds may take a more passive investment approach.
10 The fact that these mild effects were captured in that analysis reduces the likelihood that a healthy user effect masked stimulant cardiac effects.
The underlying factor for this interaction was probably that the term abroad served as a proxy for healthiness or a healthy traveler effect.
Poles and Germans are typical examples of work immigrants, and as such benefited by both a healthy migrant effect and a healthy worker effect [ 2, 3, 26].
Another important aspect to keep in mind is the fact that employment status among immigrants might reflect a healthy worker effect and not a causal effect.
