Dr David Hamilton’s top five side effects of kindness

• June 28, 2011 • Comments (0)

It’s not just drugs that have side effects, kindness does too and positive ones at that! reports Dr David Hamilton, celebrated scientist and author of Why Kindness is Good for You

He outlines the top five side effects of kindness:

Why kindness is good for you1) Kindness Makes Us Happier
When we do something kind for someone else, we feel good. On a spiritual level, many people feel that this is because it is the right thing to do and so we’re tapping into something deep and profound inside of us that says, ‘This is who I am.’

On a biochemical level, it is believed that the good feeling we get is due to elevated levels of the brain’s natural versions of morphine and heroin, which we know as endogenous opioids. They cause elevated levels of dopamine in the brain and so we get a natural high, often referred to as ‘Helper’s High’.

2) Kindness Gives Us Healthier Hearts
Acts of kindness are often accompanied by emotional warmth. Emotional warmth produces the hormone, oxytocin, in the brain and throughout the body. Of recent interest is its significant role in the cardiovascular system.  Oxytocin causes the release of a chemical called nitric oxide in blood vessels, which dilates (expands) the blood vessels. This reduces blood pressure and therefore oxytocin is known as a ‘cardioprotective’ hormone because it protects the heart (by lowering blood pressure).  The key is that acts kindness can produce oxytocin and therefore kindness can be said to be cardioprotective.

3) Kindness Slows Ageing
Ageing on a biochemical level is a combination of many things, but two culprits that speed the process are Free Radicals and Inflammation, both of which result from making unhealthy lifestyle choices.  But remarkable research now shows that oxytocin (that we produce through emotional warmth) reduces levels of free radicals and inflammation in the cardiovascular system and so slows ageing at source. Incidentally these two culprits also play a major role in heart disease so this is also another reason why kindness is good for the heart.

The contagious power of thinkingThere have also been suggestions in the scientific journals of the strong link between compassion and the activity of the vagus nerve.  The vagus nerve, as well as regulating heart rate, also controls inflammation levels in the body.  One study that used Tibetan Buddhism’s ‘Loving Kindness Compassion’ meditation found that kindness and compassion did, in fact, reduce inflammation in the body, mostly likely due to its effects on the vagus nerve.

4) Kindness Makes for Better Relationships
This is one of the most obvious points. We all know that we like people who show us kindness. This is because kindness reduces the emotional distance between two people and so we feel more ‘bonded’.  It’s something that is so strong in us that it’s actually a genetic thing.  We are wired for kindness.

Our evolutionary ancestors had to learn to cooperate with one another.  The stronger the emotional bonds within groups, the greater were the chances of survival and so ‘kindness genes’ were etched into the human genome.

So today when we are kind to each other we feel a connection and new relationships are forged, or existing ones strengthened.

5) Kindness is Contagious
When we’re kind we inspire others to be kind and studies show that it actually creates a ripple effect that spreads outwards to our friends’ friends’ friends – to 3-degrees of separation.  Just as a pebble creates waves when it is dropped in a pond, so acts of kindness ripple outwards touching others’ lives and inspiring kindness everywhere the wave goes.

A recent scientific study reported than an anonymous 28-year-old person walked into a clinic and donated a kidney.  It set off a ‘pay it forward’ type ripple effect where the spouses or other family members of recipients of a kidney donated one of theirs to someone else in need.  The ‘domino effect’, as it was called in the New England Journal of Medicine report, spanned the length and breadth of the United States of America, where 10 people received a new kidney as a consequence of that anonymous donor.


David HamiltonDavid Hamilton gained a first class honours degree in organic chemistry before going on to be a scientist in the pharmaceutical industry in 1995.  Today, asides from writing, David works as a motivational speaker.

The above information and all scientific references can be found in more detail in David Hamilton’s books , Why Kindness is Good for You (Hay House, 2010) and The Contagious Power of Thinking (Hay House, 2011).  David is also author of How Your Mind Can Heal Your Body among other books.



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David Hamilton

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David Hamilton gained a first class honours degree in organic chemistry before going on to be a scientist in the pharmaceutical industry in 1995. Today, asides from writing, David works as a motivational speaker and college lecturer.

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